{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x67ca998e9c61f764626b6ca7e459bdbfac7990f538dac209d99a4f3c7825e871",
    "signature": "0xfa77ce322c4758debf149c2428402a85932a91c0b48b87cfd975bd772f643e8f55af570de357b7723c5d926b78384a9d110c3259fe67d3746ecf4f20d7afbf131b",
    "signer": "0xa31335946FFa989Bc175B4A200cC3215EB94987A",
    "userId": "883667445"
  }
}