{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45a7c092efd038ba8d4a2f5bda18df2be74792138064705bc7d504db7d435bc9",
    "signature": "0x054385dbec69f87ac5837776c777e98e6e0b27867cfb1919b845b9ea689112f00e285d3809d119185716b1ef41beb49eb0fb282feeb08606f317b448c64c8f801b",
    "signer": "0x1d2Cf0589BE039B18f265a88e571dcfBa06C047c",
    "userId": "835577932"
  }
}