{
  "manageEntity": {
    "action": "Update",
    "entityId": "121485742",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierage72xynfbvqcj57bd6ssjfya33dw7ag4653z7qyvysuv2sinemia\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1662299695},{\"type\":\"playlist\",\"playlist_id\":1511340248}]}}}",
    "nonce": "0xcf0b72f7d64666d409537564131701cbbe3f95f5d2d1cab30f328dbe6ed89427",
    "signature": "0xcde24bb10bf7313b6c15b33594a978c2e9c2db7251d16bb5ad61b7c3210c75fd66a2f48faa85d2d4a9e61814e296d15f9e6a11c8d867f861718bf023475293091b",
    "signer": "0x5414e2895Ab8E07072C26888DE16669f1BfA5B31",
    "userId": "121485742"
  }
}