{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "873828511",
    "entityType": "User",
    "nonce": "0x75d84005792031cec44d1eaf0ab079431e05651d3237175ab8a219638238f1f9",
    "signature": "0xff3423e6e3755543c149ac21fb8e931ebed769ebe1821c7f68c00aa92f891f015ce1d856749d8faabe4b3b8cde6739d9ecb9f60c6dd0059ab595741e83d6ce981b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}