{
  "manageEntity": {
    "action": "Save",
    "entityId": "1183356801",
    "entityType": "Track",
    "nonce": "0xd32bfe48ea79fc793eba0493fdc0575e6bf985ccb1792410a0297a5d24d2c20a",
    "signature": "0xe85e8842a87a1fce96807a351de3a404288c70b464b9050a14fe14cedf2cc4c5481081a286f367e2d0224114d88e91f86c08442140c1027f55b15247b493a85c1b",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}