{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x981a9801027e786b2a7b213911ff436b98b9cfb60fd000e7f07c88d69fccf1a5",
    "signature": "0x3778b12af4d53b6235d512a7ddbe43d45aa9f8782dfb04cf10dbb2d427a5ddbb0f8f28307f74531f7bd7b4994bd42957b16935169e5417dfe1c55332414a25511b",
    "signer": "0x343Dd66E948d0E94596Cd0eb47e9be7622F41072",
    "userId": "260120577"
  }
}