{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214509563",
    "entityType": "User",
    "nonce": "0xd4e0c7ef1d1b6327c1e1a41ef280480822d906bbe659cd79e65920e1cd27bc1c",
    "signature": "0x468d583b1564901a074db84fea79b0d9a43034f280b5775ebcdedb2c9d52e6d37e80ce3baf511b63931ef0d4e8cfe0b96bb6dea864902de3360b10196aa54bf41c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}