{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0x2b7af8bda16bd1a8c4b849c39c7ae7a7ac8e5d77b936913d53b3fe74ff5711ae",
    "signature": "0x2923fe457d2bc3bc438dd56debbb30cfb02333adfb7e6a95557ad81f5a41442208067fd279626100a52f763b0dcf4b861bd948d3574a2710cae91bc00b12658f1b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}