{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123395122",
    "entityType": "User",
    "nonce": "0x5b952b15f8cfbfe784a98007b9650187ac6edbe6b1ebb91fd770e9f4ab6a1eb7",
    "signature": "0x74c87400d62bd4a9bec5d66a807b2e7ba3675500386ccb00d18db69b9509920776f1a60061351ef80172034e3ad85020e3d21b1d60e307a36aab704fcec16e811c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}