{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197808111",
    "entityType": "User",
    "nonce": "0xb3f4bbeac3e5cffc431edeecd66b7df9a2d146e1cb461969dfe7868fe7487c0a",
    "signature": "0x709aafc146970c4508bca008e979bc1cbbcf2c7c89ddf6d4456ebfa48fbf67484707b694036bcfdae5b29afb746a8ceda6ec0298aedd882cc4a1870a6ac8cd231b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}