{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215945",
    "entityType": "User",
    "nonce": "0x47a7efdc38dd4ec1d0866e3658b41e923199d433ba0e54489b2d3b01a4d3b791",
    "signature": "0xd8cb53c06ff5ebae67a0514d24ff59c3acae03a17acd3c381b1fb54f1d14d4ad1fc9cce84773a154b0b2b8c718f15a6b8ee9dc914d722c1bee74d79bdacb56211b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}