{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x617f304b602093e854ed553c08515ad9b7c09db0a2f1216c9d3031a4655452d9",
    "signature": "0xbedf155d7a2f3d76aa5ce2ef983c88e0a365b6ed05fc318b407a7f69139a3eef22a944c70b678344276aed941c96741891b55b096391882cca1527b3008958931c",
    "signer": "0xba266E8eE950a069Ab77BF24c8959a2177fc87F9",
    "userId": "757492964"
  }
}