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Table of Contents

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  • Header
    • typ: The type of the token, which is JWT
    • alg: The hashing algorithm is used, which is HS256
  • Payload: contains the claims which are statements about the user and additional metadata
    • jti: The ID of the user session as generated by CRM.COM
    • usr: The username of the logged in user
    • org: The organization name of the organization that the user logged in
    • oun: The unit name of the unit that the user logged in
    • exp: The expiration time on or after which the JWT becomes invalid and should not be accepted for processing
    • iat: The time at which the JWT was issued
    • cii: The contact information identifier (applicable only when authenticating with using Consumer Application Keys)
    • acr: The accounts receivable identifier (applicable only when authenticating with authenticating using Consumer Application Keys)

  • Signature: is used to verify that the sender of the JWT is who it says it is and to ensure that the message wasn't changed along the way. The signature is created by encoding the header and payload and signing them using a secret and the HS256 algorithm

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Note that the JWT values are case sensitive. Also, exp and iat claims are defined as numeric dates. A numeric date is a JSON numeric value representing the number of seconds from 1970-01-01T00:00:00Z UTC until the specified UTC date/time, ignoring leap seconds. There are online tools that you can use to check and validate the JWT, such as the JWT Debugger and also calculate and validate numeric dates, such as the Epoch Converter

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