{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0xd8ca8294ca2ef0a9be2e2a299d1dcc2e411dcf7d9de6c2364667bb48e5747303",
    "signature": "0xb8a9cd156a550f6b89ab53c86cd368c658dcc087392f79d5e2c7acd7ce7d5fd73a68a93c56e614e1654e4be444920b69b7750e6f3656013b42707f1e18e6dcff1c",
    "signer": "0x4905E9Eb492e277Ad8515096E7AdDfEAF2dffFc7",
    "userId": "529290107"
  }
}