{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987024554",
    "entityType": "User",
    "nonce": "0xc990c767890148d552a16c27c40e29b26ab4f089a95afe0ae775065f0e8342da",
    "signature": "0x450da1e1251d813ba380a054bfe4f8b473c187ec06271b7b0a17d6522d1ce1f51cec6fd8d4c7672c326dc6133ee7bd36edc5aab020cc12b2d77e32e3649f92951c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}