{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2cf79914c3eecf38392f31d40fbca9eeb839a9909169c004126b7d50a7d675e4",
    "signature": "0x323b5d2c4d9e0d382ff0aadef67b33c46ee242c50ae4ac206f4a064bde78893819494b76b3b14434bda47a86c95b4885d4c8083bc4fd49229e13315a510f56451b",
    "signer": "0x7b746BD4A8B71C1479681ce4B0DD8e547207946d",
    "userId": "669884385"
  }
}