{
  "manageEntity": {
    "action": "Save",
    "entityId": "714201023",
    "entityType": "Track",
    "nonce": "0x84aa2fdf6228de6c4e945e5a70ba6e00cb68d70579fef2b38c84cc04fb9dd878",
    "signature": "0x98b6ff5e9cb5e82f3158bab8e79157ff87133864a7e8f08228a9f59ec8744314130146610257bee0be3dbc7c05fda48c6ac07584ac6c869e4c759b2caa1264d91c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}