{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15122",
    "entityType": "User",
    "nonce": "0xf1d61451a135648c9dab1bfee88920aeffc3d13dba3bbe78fd429efc85c21b6a",
    "signature": "0x9b4342580cb8909a1589c72db8de24742b3aa5020f3a93b7fd9fb7827f5af5a90a08f33885f202f862042a6459e9d42f5e477ffb50e42c24be7a6d8b3a33d6ea1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}