{
  "manageEntity": {
    "action": "Save",
    "entityId": "1764992225",
    "entityType": "Track",
    "nonce": "0x1aa77a10f59dc63769e63a2484186b94176917a9edaf5fc2201a13d461a97801",
    "signature": "0x0a8027d45b5afb6dc19a28170f358ba9dff0122e8ab62432fa4bad126553440650f9b1deccf06b96b987aa5624884318befebf61cbd859aab4ff135de7229daa1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}