{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7d32adf12f3c59064bb2194ab3bbbe7e56220cecfb87b66a5d1bce352a751ac2",
    "signature": "0x713d5fe7fc7876433770f3df34f954a2a00c13d7e5eb3eaac77c5485a7ecdcc25d4a323ace2178e1fc3e6c20aa8fc47da2949343baaa283acea1cd8c0a0d07c41b",
    "signer": "0xca0Ac666a36aE2256dD0A651F18546451F0e0eA7",
    "userId": "407550431"
  }
}