{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0x41881b55bd3a919e8ac3a56c4d66cc20a1ffb7fa916ec47cab95916b82294d3b",
    "signature": "0xa95fb3cf9b04bb0e422ca86b65467a8fdeb11505396521d5c789b2dbe09c3dce79b1c84334f6bf5ae0cd47e34f004c9454ad84b5964ec53b2c73f5de49a882c91c",
    "signer": "0x80a0405FB3B9d86d11d9837558C400BE65BE42a4",
    "userId": "464100900"
  }
}