{
  "manageEntity": {
    "action": "Update",
    "entityId": "788000444",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x51afccc14071b6d1508b8cac05f51f04e61f57151b4437664e4217f3492c7e2a",
    "signature": "0x8242cf3a4415719a1263169702104bcbbc4427d9187c58118c0c72c9ce1fd814272bd8011c8a44850990ec92e9bcde6330b1cd3701b73d760760688cec18a7a21b",
    "signer": "0x1fe2af59c615c0c111509b8255F966Af4312da41",
    "userId": "788000444"
  }
}