{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "251550",
    "entityType": "User",
    "nonce": "0xbaa9670c733bfe633801bd520ffb13b7fb7986e3365e1b84308d884da0bd7329",
    "signature": "0x6e6b80bffcadcc31b5b211f849d01603ed678f31929ff67882fec9c6f4faa5f220d8b55cba13cad54e59835fd2e18a06de3a18afef06f69b2dd5de3e6d434b441b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}