{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18534721",
    "entityType": "User",
    "nonce": "0x893eafb3c89ef98a87bc93a49f4ff0df53d4953969bf316c560a0adc06a5d0b4",
    "signature": "0x4b5c942e1fbc456531eb1e403c0388b45b2c63a19042927304775e844d009a17175aa9145a00ec3cd3ffce73ca34dfafcef6d20b43e7d3e4815266004b6237621c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}