{
  "manageEntity": {
    "action": "Save",
    "entityId": "2082554698",
    "entityType": "Track",
    "nonce": "0x90f41238e39b91fe1fdb4ecd8e92c82a0e7d9e6a964cb3f33f34e39892330b63",
    "signature": "0x1e69aa61209ae03da978397efb43080c5a021b15729d451d8b38e3645be0bc7c3da88ca9286e2920df3a5e111ca4519be82092193db96796d778217f8847f70f1b",
    "signer": "0x876316F5434D2e002eA96F7B95d5E50DDACFE6c8",
    "userId": "209259804"
  }
}