{
  "manageEntity": {
    "action": "Save",
    "entityId": "1025272661",
    "entityType": "Track",
    "nonce": "0x7499c44ea68e7766d291e6e58e38299a37ecc82e976ff0727f7641e7bd7dbc37",
    "signature": "0x71457720b35bdcf62fff70966187e14c8fbfd54ab469f73d87a22135ad407d202b584ca9a416b77f7d4433784ea5888498dce8d003af99b41f3acec0f2fd4f6a1c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}