{
  "manageEntity": {
    "action": "Save",
    "entityId": "353088186",
    "entityType": "Track",
    "nonce": "0x5789ac49f21e6c908dd81f86832b515077816df1f5873c2c063e2b98b33ee9fd",
    "signature": "0xf2aba919e44929eebde8f52cb2b322d7b77e73e8729c4de251739ce56a514d6e75bac198ed9a2aaae6afee8ac08887eafe58378a0dbefb508a10af879cfcb2c91c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}