{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273529333",
    "entityType": "User",
    "nonce": "0x6af3a5e304ed7c22218a0ba5580a01082e79fb58051f951fd567e2be7c91c30c",
    "signature": "0xea9329dafd8816ca9da83a2d8bd944127c41dfe8da1f5702a71620378789b9d63bdc7a675c870f0e36e908aab3fc9fdf1a525e67ac9ed7324685ad16969020591c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}