{
  "manageEntity": {
    "action": "Update",
    "entityId": "783269552",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5f6192a615f919c20756275b08e40e353ed707a45c17cf3ad73d50301351786c",
    "signature": "0xfe9444225d887b294f4d2d889bd16c418f93a8f0210fddfbf87018ed77cbb16e62ae053bdfa20efe36fa340f227ed757e7117a9e027a34973eb642be5f94c4971c",
    "signer": "0x0C7E3dcDA8c6b4b66f9C89A3f95b52b70E44ea68",
    "userId": "783269552"
  }
}