{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672",
    "entityType": "User",
    "nonce": "0xaa65c85527326375f88071e41f287c1d51c770048dbe64e8342e10f7f352c122",
    "signature": "0xcd8aa26aed7bb693708209d9ad1582606f620f00826c4e36c2f5e02a78619aae2d0deeab4672f3315cc61ea2993a257d576418dff01774eb1fd63e15636acc391b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}