{
  "manageEntity": {
    "action": "Update",
    "entityId": "324170795",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierazsxfitzm3lt64fku5ddz3cnxfhss3iywu7hkiiue5hqayyolhnqa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1972733550}]}}}",
    "nonce": "0x22cdf3037fa0a6eb6937f4bd1805452adccad3e94ef5b267aa07d536e29da078",
    "signature": "0x3c212b0a514f512c041ab96f84ec77f59c9515683a379fef150b2100f2e6add822dd33846b73d80c2ebeb795598309d9f6b93417999c80cc0d50f396b8c72e811c",
    "signer": "0x7212FC9b44b2BB370D62E8b98dA3f7D74c307696",
    "userId": "324170795"
  }
}