{
  "manageEntity": {
    "action": "Save",
    "entityId": "1105467648",
    "entityType": "Track",
    "nonce": "0xca8ed27cee3c7494a66a5d668374ecb9b2a4e0ba5cd3a0adac9b9058d04e61d1",
    "signature": "0xeb1517817def62ce3689babd0afb6d3215e8d55049e4c5c8ca86b1ac4fd59b6f4f77ac1cba318b6e815313ab9cce003dc9bbef38039c5c8ab7db6f5ca0699e151b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}