{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "808512351",
    "entityType": "User",
    "nonce": "0xd9cc9464b1fb05a0984174b91f31f30dc837bc7ebd8018dca499bdca77aa6495",
    "signature": "0xcfcc4bccf87e4cba4f6c8101bbddf0eb55d2095d667023ffddebfb77db0367720d418acd498f394a005077d78fb6e0ef8e2504105906af2ab4eecaa33c6db3e01c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}