{
  "manageEntity": {
    "action": "Save",
    "entityId": "771141606",
    "entityType": "Track",
    "nonce": "0x9eac74b81766dc26dfc3c2f31f2a3689c64cd3ebc1a7513154a7489f4d4b67fd",
    "signature": "0x411482d681f3aa952a46f8ebd198ce8ae2942b80ce7b6e243d99e3df0370999c0c8ab9c94333342b24f2da76bd9e8840b22fc182de0da787b395f162a48bfe1a1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}