{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5a0dee8afb5ccf7906dda8daa197082fb0edf105a4bf90450e94cb8ff532e9f7",
    "signature": "0xbf86b8c4ba5e665e478fefdb49212fb5a1418ca16636509a1aaed660a49a91f968f610389828579e8d1c36e97185a35fef3c92c3158797ce16fe0ebe42c9222c1c",
    "signer": "0xFf41F99020d8F1233aCcCAAba96B21eEb5AadA30",
    "userId": "387680407"
  }
}