{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13efe59ae53b245538c0e45ad24198ca6601d52da7aae66ec4396153c241b932",
    "signature": "0xa890fb850df7e408718341629842791afa6e4518d716f48b7069cf0893cd12e3426d08cad197d7f8ea1aa2d586da74f8800cc98148b00228cd915717878206741b",
    "signer": "0x6A2105c886554E76044CC1b23065cE8F193A0E42",
    "userId": "569588208"
  }
}