{
  "manageEntity": {
    "action": "Save",
    "entityId": "1613896226",
    "entityType": "Track",
    "nonce": "0x10919eb3153d01b019d3b9b6c5b843f78a3133f9e56ec89efe7f92f2c21777f5",
    "signature": "0xb49d49ecf877b76e140048b66ada53823db272ebf6fd8ed84dcf426ac96441807ca8c46f502a6085b1c9e713d99140530a49e2c753b2b6d8b706790f273365cc1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}