{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "35251",
    "entityType": "User",
    "nonce": "0xb5ea2e5965183dd0988052f6e507f3b1b3900de8b1643a323a1160c25b023fea",
    "signature": "0x263c0c7eadee1de616c76ee8b4735b85dfaeb44698b2061b2b1d3f5a59b9d6774ad2b9767acc319ce3a2edfb9b45d99a112c46ad207fbe729055f55c9c9ab3911b",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}