{
  "manageEntity": {
    "action": "Save",
    "entityId": "1014989",
    "entityType": "Track",
    "nonce": "0x9daeed894b7b93b392f764d1b3b1912fa9b84594109139cbd536ecf40db28ff8",
    "signature": "0x1cb1dc4d189041e2f8ccb0be5a07441a1d222faadc4bfe3cd32305c819ad7ea4193244609c272a5d4ca2d6a7dda4abc7c03b39c245d3240270885b7f3d1c8bae1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}