{
  "manageEntity": {
    "action": "Save",
    "entityId": "3641060",
    "entityType": "Track",
    "nonce": "0xcc2241d9b14053cb21ef89279091f6eecf8c4f0eb170c20b76517d9a06d6abf6",
    "signature": "0xb05710fa729f25fa6e3fc9c4dae0eed240b25248a8e7a33edf6bea9c7b39323d2d1906d6eef9a0c0ac66279b5e274b9f96cb65ce6465af2dd0f1d20ff1240a041c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}