{
  "manageEntity": {
    "action": "Update",
    "entityId": "770643329",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x675e565886ba3f19261a861724f463f45812bf98d4c0f6b19f11780179f83f9d",
    "signature": "0x342e54ba02b6c57923838b56f08c070f271d4e83f5ced35cd5164c4e41e46adb2af90ca79b352e321567769d96e06e02ddd94aa5f95dd6b5d760fd621882cd0c1b",
    "signer": "0xc3aA6C198bd0A10Bc503827Ae471c2Ab6fE364A6",
    "userId": "770643329"
  }
}