{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333438",
    "entityType": "User",
    "nonce": "0xd430ecda731d04123e5313d8c9019df69a4fd131f4a080805558f43476fb7a18",
    "signature": "0x6a036d4b2b265f4626923fbf715228bd76fc71d2dac68667731b3ae73a7b6de44f5b5c9140de93018c89931ae487aca821f306afe06b12c18861b06fa1389bdb1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}