{
  "manageEntity": {
    "action": "Update",
    "entityId": "922774888",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0bd4e992ded9ef00b67daf6620f3586a7ef0a1f276b055dfafc7e99d513d4ee7",
    "signature": "0x81e9f1eb9ab37656f5ef4778eb7ff4f2e69c8774e63075f2f2cdc906c5d72cec7f6896d18d8f3e0e93f60c74f3ae4bd9cbba477145c3af6ff169e6ed9d9cdd0c1c",
    "signer": "0x8C872Fe63A41D563d9e61D2a3648AdF4a224Fd1E",
    "userId": "922774888"
  }
}