{
  "manageEntity": {
    "action": "Save",
    "entityId": "1830086911",
    "entityType": "Track",
    "nonce": "0x00e4ce1d1799a3102dc505af17a90095fd3f566e265fe4ed582f8e7bf4824fe2",
    "signature": "0xbaefa711afd323f4c6aed6c55926472853e3178961c666b62e6a5e4b7f4cca4926a7a06c761e61c48efc917f86673e0d8d8767b14fac1e7957b6dcfe35704da01b",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}