{
  "manageEntity": {
    "action": "Save",
    "entityId": "1358167285",
    "entityType": "Track",
    "nonce": "0x0fe3d86dae326f044c32305dd1fe140e0733273a049e9165c5917028a2531987",
    "signature": "0x8432f6070d18dee855546b05747fdac0fce224adfaaad4134e0cfa1099769f47739073f9b84d7a9c0536a869e1f2f3437d0a7543de533cffc21ffd681b0345d71c",
    "signer": "0xb1B522e4c290853bC2ABb1D802d311A7EB1e696B",
    "userId": "94334210"
  }
}