{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335392",
    "entityType": "User",
    "nonce": "0x3c50eee94f80a8456bc691ebebbd92c455f8233ec3d5f7afa5f283ed78519bf9",
    "signature": "0x611a9249c2c25bd27418670a228c9ba2a12b4f57fce0917cfa4f2180aa07fd5b111a886ddbb2d651bacd0487a5d6c3bdbeb4fd65972753e5c0d62ab8d87576f41b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}