{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214443",
    "entityType": "User",
    "nonce": "0x8229eec671d9194d3ba379441ddc0890a9b884d4c82c027440429cb66a37e671",
    "signature": "0x4b9935106cff6c2cc3597bcad2d07234c0add88c2c3ebb483c56e6d4a2ad0f28076c7ffa23d05ab57809d7494766994692818ceb8be98e204e9086f9228904571b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}