{
  "manageEntity": {
    "action": "Save",
    "entityId": "1694679820",
    "entityType": "Track",
    "nonce": "0x96b42c00745b37a742fcf1630e42792848bd74fb0dee36ce4e9cca67a26d464e",
    "signature": "0x3dddc5b0b5cf177e4d56ea2324b731627eca99317b8a63c7eba0e7d77c5ca7c047f01142c5168785948992423529f2ed985dbfa938be1fb98be6e2b30ceccaa61c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}