{
  "manageEntity": {
    "action": "Save",
    "entityId": "2019079165",
    "entityType": "Track",
    "nonce": "0x4d5475e66218295e2dfe9e6ec9a4e175537e76b8dbdfcdedc2e3b5041c522f9a",
    "signature": "0x11b4b3a5870b54164258c3e63d726cbbfe993747d8f42a148d147e0e0f571bfc43620e797b9ef737fe231c2021b711f773979a66a393cd453c7405da9f07bcbb1b",
    "signer": "0x98fC2b30E6e70e62dB2b5fAE7b0292DE3D4323Bf",
    "userId": "480962013"
  }
}