{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0x89f55af9b8ffa3dae2b4e3ea8efe8d571bd63a25c506f43e4f463a49e41f07f4",
    "signature": "0xe3e22dee0eb41cda05d3a18fb5716701bd9fac4eaf1d78ba1d4df55f48b4dc75201be2e1017283649a48176aa2522d75ad1e8d14b8ab44b7ba90eb173b56c5161c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}