{
  "manageEntity": {
    "action": "Update",
    "entityId": "161375643",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfb7b55cc16755fa7758698e3713c27e8d4d114d810bcb5989cb6ecddcef7fa7b",
    "signature": "0x1655d9bbac3d408e90696ffe77803942a72cdade1cd17393fa7555d55e12c9ec637ee2ac9fafac53f4cec46b4d98e448abb8d62ea34576594d1c86312d43a5f01b",
    "signer": "0xE0721850C6Dd133313178AAEF70B7D204c94dC3E",
    "userId": "161375643"
  }
}