{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4cb7285212a90c945ab6cf9f93149986e63c49a810d0dc07a53b1c8df5ca0cd5",
    "signature": "0x90a56860b53624b29a609abcb90a16f7b3acea575325da63ee2758ecb3df466178d1adf1a3e035de2b95fec7e4f128d3baf2a4df88057e7d29164f194b6bf70e1c",
    "signer": "0x6F3aE43BB2df53A1aCA47FBD0F3DBC879eC87cc0",
    "userId": "370701108"
  }
}