{
  "manageEntity": {
    "action": "Save",
    "entityId": "1279519306",
    "entityType": "Track",
    "nonce": "0x8032dcad511886e09f3946b61e6a8a9daab71a4875db9297756018e359e9181a",
    "signature": "0x8875923ccc02a50d0c305042eea2bcbf5e77c01a0f62c16ea2013468be06c739455268bdf1c65b61d87883fe71ee0921a6c2cdb0a3a2b8548ffa964fc32dd0021b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}