{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x96b02c9d435f439ae482f956e7219ce529d6b2a2440fbdd0e1b39a25e3375da3",
    "signature": "0x12c233bff90774bd6b44c67f4969e21807ef56f868199f65095a2058cf4e8d0c646c70378b1561fa4704f227ff911c72d4ca122a7bfbcd87045cb9904360db0b1c",
    "signer": "0x2752c6C488Ef240895028c3B2287EeC269C7EC7A",
    "userId": "79019982"
  }
}