{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "710498429",
    "entityType": "User",
    "nonce": "0x2c678ba6827cd2240ca92dd0d0409095f0b20b6a1a077f57360c99f2b25ee1e3",
    "signature": "0x3c37ea4e4bb6f542ef77c22857d71bc27ba51b686218a2a29a4a9539a4305452076081df7c6383b841260172bf213f2ee9ba5895fdfdb74c66b628f494885b811c",
    "signer": "0x4C0e8973cC8C5BB66d6627C8D489e336f0825A94",
    "userId": "939865626"
  }
}