{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23fbcec1e12c40b4fc94ff97f479de7f56d082c6108069cc96e5accfc49f1cb6",
    "signature": "0x02c7dd6a37db3fa89f37f27885f08f49954b2bc9202f7e3a29d155b0e8429ee54c728ed3ab9f5b64bab0814387d69415e1baf073a3dea03994196f9b810444e41b",
    "signer": "0x67fE87B4c81d43F3d1298607E78da6707D4c7663",
    "userId": "723451237"
  }
}