{
  "manageEntity": {
    "action": "Update",
    "entityId": "534038283",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarfuq7bpl3s25jv5spsdlhwnb65rawrqedgw7imqzjrxyhreby5ca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1206137286},{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3cccd71fd296232adc27fd2a9676d93adea017be557e3e44feb9a9d9f959daad",
    "signature": "0x13868b8600def4fc0fce9360329bb1af307a4668b731743c0a3240124555297a15f98570b521a65ef5d5512263608f817a88ac8a6313285bdd4c95acce6b2d001b",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}