{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x27d95cf3b0616ad430b3a7ab11d2b3c7636618737363fc6a5d51c34afae14cda",
    "signature": "0xf4df2432a754f52c4b2f430268313824e2944389ac3bc6e77c6ac1e74c4223fb69bdceb1d7a42a704ddc48068b1e68fc4487e3b6f819703b6006fb2234a565351b",
    "signer": "0x66Af47B6C13Bd2B959f900f7195F8FCad842c6b3",
    "userId": "154727212"
  }
}