{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x56e78907c6536b675e9839787350a5f59229baf8679c9fbd7733f070395c5920",
    "signature": "0x31468df6bd18ba7c69e8b7b41c3407501250b9d483e38f66d8f76ce975ee364556f7ab0ceb8342f07928891863b1b191f89703234e23e6d8f53d238c977d74eb1c",
    "signer": "0x10dbAfEF5bF15DAE942Aa32B12939c4c5fF6fDeB",
    "userId": "387720901"
  }
}