{
  "manageEntity": {
    "action": "Save",
    "entityId": "1348562674",
    "entityType": "Track",
    "nonce": "0x0639ef949866db287a1aa57fafda010b7020306125c8414784fc868ccbac3857",
    "signature": "0x79885966f755a797c410f0300d746416db8737d5f32b5f542f2c428f942fb58a6f62b0dac7a0365773ce89e047d0138bb0fb31640f1289ef0aaeffdd829f0d1c1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}