{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xc5a28fe9656bc4e3d68504ee508fc0059a4f4977a7463cee27ddf0ffd4a5a627",
    "signature": "0x50e4936b44d7eba7b8bd1c5b9b41b44ef8f8a611d23d6705e2d105f8a7e558c7046c8f57f0a4b9070723c7f877d3430743dd09211e60b2792b52271121a1e6c91c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}