{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a696027ec56e4738191fb7ba186b92aeb8fa446f7dc21976005a9f96adf7906",
    "signature": "0x2b291bd939a9b4999ec30c1cf21d772b165f116cf89faeafd575c8b7eba12ded785473cb1b652ac0eeb63664bedf7d50029f55d1127e5ce620902d3bc7c3bc071b",
    "signer": "0x3D0cD0211F5DA2575dA4de4F55D77Ee5F363Cf68",
    "userId": "241538404"
  }
}