{
  "manageEntity": {
    "action": "Update",
    "entityId": "51433151",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera2hb27rz6rcle3ejzpa7ehwykqjbmyqntop7ux6j25p7zmsv6jvgq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":75379}]}}}",
    "nonce": "0x4ba8cbb1cce3cab0ea4c5f56a81f45120b7628dd7dd103df92201fffe62aaf80",
    "signature": "0x5a8db2e10dc6c8cb1f5ac49be6c3cda1c0a3620e134ed73267f988292d6c59892c61807316f1c95faea4a825a3137947dfa97069cc7041c8861ea68f1761e9581c",
    "signer": "0xe07759002F950E60C71106A60a7c05Ce7F085171",
    "userId": "51433151"
  }
}