{
  "manageEntity": {
    "action": "Save",
    "entityId": "596200467",
    "entityType": "Track",
    "nonce": "0x32f996cde5714d6ea96642466b85fde3d577762c40ce6d27649db631ab421b89",
    "signature": "0x6e464f01200f3b613fb18ad55fe7b4fda1e61b858636b30f9b14c945a2aa9bed1c3d39debbac8767ecc92e2214e9d17e086e6d36aefced5a113a577516d383ea1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}