{
  "manageEntity": {
    "action": "Save",
    "entityId": "1794205324",
    "entityType": "Track",
    "nonce": "0xcca2159319f68e4f136c58f80d8475ff12868d28266489d39ceedbce0ffefa91",
    "signature": "0x0eab903ab0bcd9611a8ea3be7b66581967607b08eafb8b9c21a651fb03522a333a195251b4385ab80e25d463be9d73aee657b069dabe042a2118efa44ba4337a1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}