{
  "manageEntity": {
    "action": "Save",
    "entityId": "1993376015",
    "entityType": "Track",
    "nonce": "0xbddf4d4715cbc5f61814c5585bf7824a1deb008e14f624271d72f59643690dcd",
    "signature": "0x1de29d2592064360a9c6020d08c73be1d1b72c76ab5a99e3083402b09b85456345cd94a06f39d4439c2ac4b1d056729f0bb154d98554c3cc1bfec1c040cc92331b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}