{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x142666f5cb9c17089d8b4421256fae174fb630dcd9aa402236ac2bae9c56db47",
    "signature": "0xa11b6d93eaa00fd14ce7dbb1893a26a69f45f7f19688c749d15a45a7b3f2995c4d27b8443b85a580cc21de1555b9d007fa78f6f515eaad0aa5a2c7c8fb7e6c071b",
    "signer": "0x7a78569646ADa00a4d555F20fA48e9cDb9ef14F5",
    "userId": "333304008"
  }
}