{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1df11ed823afb12554dac5454ebc3470d4868f945cfe13e8158c38008ca6c30f",
    "signature": "0x9f44ea8a3da4de812053e91dcc10d50c85a77ae22b8f0320a0d0deb24250530720f7f71311c954994e5de6eb23a9d6d2e4656c37318b5cc566ef8ee72951525c1c",
    "signer": "0x1B58D273a8157400598CDDfaa79118FFbbD0810E",
    "userId": "212717491"
  }
}