{
  "manageEntity": {
    "action": "Save",
    "entityId": "1361218840",
    "entityType": "Track",
    "nonce": "0x7ca638184a00c4f7d7f861e71a0919c12a81bc1820267ba8cb32cc20f6c9e772",
    "signature": "0x1f01ca64e362709ee7187423c07f29fcefef6e1716706b4638f0425e216c5e037ac326029e094c57cc5bfc33c8caa6d02bbaf9fcd8a4e1702891fbab648845ba1b",
    "signer": "0x7B3AFAc08245Ef9d1CFfF7f7cdDBCAADE68f94E3",
    "userId": "230426"
  }
}