{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe20c1fc1b44d283614d03ada6989c7c94e6df31f58df34797bcab5098a9286ce",
    "signature": "0x9acea2abb2bad245324053bdc75abc78527d264dd801aefe037e720ccb9e90071f62217aff839b47fa03c24078426fd5340d634841b309c740d597c58227ad4b1c",
    "signer": "0xC443f2af475f55e666B5e792B193eB1760D726b0",
    "userId": "540561722"
  }
}