{
  "manageEntity": {
    "action": "Save",
    "entityId": "1058079",
    "entityType": "Track",
    "nonce": "0x252d34fcc4d65c555514288344a7c1b00349a2d0bf1c9658cc08265c89fdb93d",
    "signature": "0x16f50e23eca3b307edf354453ee542a26794f1330bc36f5ba88acc37c4c673e22cb39dbf7207345222e47e0b92f15abb019b0ebb39078512114fd972b3ccbdc31b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}