{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1438540",
    "entityType": "User",
    "nonce": "0xee0db305f942328cde538dbf54b8409522c8eca93258ab5f94cc43a06ea3783c",
    "signature": "0x6a83b04d679d75b87a1892e9a37f3a95d855d9efd6c15551a5e8641472acca2d42fd515ad2a6497272b649624e53a66254888daa04e216c052407e379bcdb3a61b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}