{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc4cfaa6af338eb5ae53cf1958bfb0f6fd3f05782dbae6c78f77c35750e260fe8",
    "signature": "0x8902cf330347a049be09a604d9f0256998765ab028ea37bbe79bd4330678a4150aecde4315045dd0adb73774c459bc6ec305f7da2a9aae3c4e28db1b1a6f7e2e1b",
    "signer": "0x7E80035097e7d69E625EdFBA251c652A5545669D",
    "userId": "23535481"
  }
}