{
  "manageEntity": {
    "action": "Save",
    "entityId": "1252330406",
    "entityType": "Track",
    "nonce": "0x06bb06315a491ab42336600083ad2acfb72cc0ae2b9b88b0e2e9e5cae6f989c5",
    "signature": "0x316db61243c45cfe4ae2292d401b90a7bcc8e844dd51e5add65f66f0b6d249e2370b000e61420f8431fca3a13b1dc5fff04dbfb69cabbcbe83c8557c12b108c01c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}