{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x479ce18b48deecfcdef7e234f4ece10856345e9169e1bbaf384bedb1540eb105",
    "signature": "0x0709933fd1166ea5e8a6d2eeb9bf97c3c672ed32b8a2512ed34a3eeff7a89b5f46aa1a539ecc3d3dda16ecc48b94f5c3eadcabf68528dd068e473697d3c6136c1c",
    "signer": "0xE00d35cDEf561168f54846Ecf996dD5dc728fF14",
    "userId": "702802703"
  }
}