{
  "manageEntity": {
    "action": "Save",
    "entityId": "55252337",
    "entityType": "Track",
    "nonce": "0xf9d1abb93ed545741f2e0f2e3b566a9620692766305af6419a724c50c45f9412",
    "signature": "0x3996ce25445643457918d2b99af879a02187db9aeb54d0e54609e7e5e09ea71a25bde1dc74489c23309da9422efd2f6c935bda344d41744ec98c63da56fe00311b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}