{
  "manageEntity": {
    "action": "Save",
    "entityId": "11789",
    "entityType": "Track",
    "nonce": "0xe2af42a75e4167bea37018be55e647786665a4f6f44d745626410ada7fa1264b",
    "signature": "0xf494f943719e9a90a0bd2ce97e3f84778ea194ae4418f8a4b94cd66187ca696731495ac607411fac726b092b45069877751d4d1fc7d98ab8243a4a4ee4097fd31b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}