{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508076300",
    "entityType": "User",
    "nonce": "0xbfe0a4ca33272a1d050124be9bef0ea1763b334cd7d4fcc5810fe4149e297aad",
    "signature": "0x9aa27bba9a4b8a3a17bc4ef9d6bcb4b6889a120a6e286690158e3addf18b725f37953036dab496c266f57508beffbbac71542cd41b03e9ec12a0bb92bef709191c",
    "signer": "0xE60c3C8C928753655cFDA3Bbd2a311Ab0557f298",
    "userId": "111540320"
  }
}