{
  "manageEntity": {
    "action": "Update",
    "entityId": "970203605",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd51334a4c3977d753cab94fc85bbb3b5b01336160db9fc13bd8e1e68106e35df",
    "signature": "0xb71573d03e892b3b62fffb06993b02aa86434bf5580afbab45523e9eed8514e74b7c5d86f49adb25b9c5404d02aadd25c5dd77be0619ffaa5b5d2fd53e7afc0b1c",
    "signer": "0x73Fa2a31B1ddF03cd963c53C67ACFd9Bd27E7d2A",
    "userId": "970203605"
  }
}