{
  "manageEntity": {
    "action": "Save",
    "entityId": "563418240",
    "entityType": "Track",
    "nonce": "0x7b6cc2eedd076b2e1adadabbeb75fb3535aebfa61c4583bcf6ecec65fa14dbd3",
    "signature": "0x14bb1fd1dc455b19c469964b27a5e3e7765d482fb40644bf510303bc294762e17372259b7cd9d3fb007781d3c3238e3e44fdf6680bde0d3dd1b38393b82bb39f1b",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}