{
  "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": "0x64ba060193d4283bff6f772e90ab9aecaebd879d52ed0b2782d7b2a1b0e85dcf",
    "signature": "0xa794e8e06ce178004006c9b9d64ae5ef6f19b252ef5ec0f889cebf798041821852a3e0b7d0f502af6c7dd31ed7ab86d54dab8be70545a15c16e1176dfbc4db211c",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}