{
  "manageEntity": {
    "action": "Save",
    "entityId": "282270539",
    "entityType": "Track",
    "nonce": "0xb6ca966e13d40b6955864c04f349b04c94f0041076df9a117784933e0a6884bb",
    "signature": "0x5dadb5544adb0b4b65a21b71b344a6f1d2cd3e693c2a96c60f64e7871ff774a76c9335c9662c3764242cc4045178942828fe37e2479ea7face9ade632a39668c1b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}