{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x3d8a52b664bde4aa08ac1f24f0ee69c823e3c7c441986c0cb56d19c8043a4aeb",
    "signature": "0x2db69cb6db93a3777a29da839508c6b425a01570327d6b57ca17a59d181454011a1d0e8443ab1947a47eca4fd5e84b8f356ed9adf76f6e12288e21da9b51ea031b",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}