{
  "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": "0x13e5884bbf8e6206f688150e98fffe56a1226183924a538ac79fb9c308430893",
    "signature": "0x4739b9091e29267c9a6ae46f1a27d1767b81a07ada721e2eec9701b815642f7510eade4d6ee5ddd7fb41e88ff729391f0a569b704169917f327fc43dd4be476b1b",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}