{
  "manageEntity": {
    "action": "Save",
    "entityId": "696356381",
    "entityType": "Track",
    "nonce": "0x412304e42703a8dd64848b6d612514177a3041a31641ca2adc051e259f29f67d",
    "signature": "0x74c0bcd5901f5efd1cee18a24c5e11c53c79e90e4494cb21bf353485a19acdd57f450a0ffb77bc6e6f7c3d52fc8fc7a1f5c996903128478d6b1edfccd210a6a31b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}