{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd047ea53e1fa0de25b36c4a4355389395406e791e74dd58bc2f67f4db18a80d5",
    "signature": "0x983aeab7b93d9218abd948d28bb2f79cd12f9d9d50e61bb01dbedad4f92748123d15bd288d5b8d43db5e93437e6df2aa225a217cfaf15c4a1b5e4bd6ab4196151b",
    "signer": "0x680514367f5E83bAcCbB03125aB2D053a3b288FB",
    "userId": "222170086"
  }
}