{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354535",
    "entityType": "User",
    "nonce": "0x313ade58f272f4bf1f754a126669ecc70558391c5f3f5392205386a6d4aac80a",
    "signature": "0xd8226f6829d9fc4f61de9d4a9a7e55e775cfd55d50322ccac8c849ce7b797d635bfc563dedae0aa5b8f7f268142ff2f74fbf114ceda22acc5c69a2a0e1ac606d1c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}