{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "765004",
    "entityType": "User",
    "nonce": "0x9f7edf95a78776b2b6720bc4924a27465a673e412deb89bfe64d6fdcefd4a2b8",
    "signature": "0x9c0d6420c8720470717943b155bd5098cc9f634b3409a03322c8cf3d8548aac816f23445ef0542f4165aff3294fdf2156c7784bcebe4e5b8acd9e383abebb5361b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}