{
  "manageEntity": {
    "action": "Save",
    "entityId": "1078200",
    "entityType": "Track",
    "nonce": "0xa14ae08c077cdbf24311875868ffcb8932ccb772352d770d2992dd06f702aaf4",
    "signature": "0x343982792102e2c767d9c97df3143bf7f619cb99183d1a9aca4dd3c0e83b933e4a406d4537a528c274823d29db46273d833cb2c85d7504bc2a0ba97e1341542f1b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}