{
  "manageEntity": {
    "action": "Save",
    "entityId": "801803934",
    "entityType": "Track",
    "nonce": "0x48d9eb88939c88fa8108ba99014a5b0ab9a2fa0898f8edfef17801384b881089",
    "signature": "0x7cbd4ae4e5244c191bbe001dc190126a4349ff55fe85bca1210c3f9d63c3d64b69a3fc8b3a8e824db8344def3a8ce8989266dc7e4889fcd72fdd7a4adfc29ada1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}