{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc3502a78a17ff6a4915a6e52c079306c01e249b960b1f32c86cf08a54fb958fa",
    "signature": "0xbf5c17a5cea1c2d848f5cbaa03bc010240102c2dc476a6c604a27480a81fbfdb6acffae3b079b8fe24d92d07854c2081a4ebe47bcbb467bf987fc0e5d00a40921b",
    "signer": "0x6B2Da146c470972DE088AF9d1115Cdd3cae54637",
    "userId": "451708212"
  }
}