{
  "manageEntity": {
    "action": "Save",
    "entityId": "1965753297",
    "entityType": "Track",
    "nonce": "0xb2295241bf4afcb4827711bfa9ed6e1ad1c3f81953b7daa0f7635ebb915290b4",
    "signature": "0xbff68dd429672940bfa1b9965a0df83b67390f19c3fe6e841400a584a4cf6ff759e61bb27b537499b0163d78225401c1e3ec1fb06702aab919d251db67c98a2d1c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}