{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13721",
    "entityType": "User",
    "nonce": "0x420c77522b4d3ca1bdff037f21e5d1ab12a3ac5a4aca354c15df1b8dd88fee87",
    "signature": "0xa80b6c488b898cf42ae960c0bc3116aff0d19e88f8c7b1ac72a67a954dfbc82c5dcae7640d54efb661aef732e47fbbb5d4f0c7795a228f214b439504095d3dba1c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}