{
  "manageEntity": {
    "action": "Save",
    "entityId": "59665503",
    "entityType": "Track",
    "nonce": "0x86d8e91209b540916efe3f48163ccf4609f06bf3d0c8551b0a4effdeeaf5ac18",
    "signature": "0xafbcf014981005f878d3ad189955d61d5449c0dcc9f1de9c62dfb6d73aa177487d294fce5e66ed5a5008c03f2dd8238e449e1dfea889da40d59f5c233f4b9a391c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}