{
  "manageEntity": {
    "action": "Save",
    "entityId": "1835664582",
    "entityType": "Track",
    "nonce": "0x6244c5ce4defc950d742b2e47af299b885f84de367308fd765a8612288149db6",
    "signature": "0xe43404dd4ed853fa05463bc82322d2f10fa5af19a32afd56346c34db48b342163f7501b4a528f7344fdf39d8ebd86c10d0e4178d12ea79cfdf0da070640fe4c21b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}