{
  "manageEntity": {
    "action": "Update",
    "entityId": "787787230",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa9d2b90cf975364b60f6612399215e4ef16fc4d1a5bdc4c49ca5c82a3aa973c",
    "signature": "0xcba39b03c7b96b9140f1c826fa8daa126180c8388e573b9e9581e1cf2268776754502b9a6e8608b214038faaafa7100b9513f2be06a7cfcffaed335f68d6a58b1b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}