{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "195840",
    "entityType": "User",
    "nonce": "0x5475e811ba79d3aa793468fa3738ccc57261f2c7888fc6bae5bb931ec5d361a8",
    "signature": "0xf2e6b3cedc48b7d154cb14814313d9255ce5f6f2f88f5d66d55d08f2f394081739c37e78df6b829f760533c5fe4fc99c4a65a592f1fb4074fea0e9972d4dc0961c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}