{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b4f9f5399fc5856f881d74bbd719ec0d24d6ce2c043f8a3c5a3b3657a0e51ae",
    "signature": "0x47ea4abf3204fd204036c170f996ff6ea4d27ea25c5c9eb08c904e8a26c5ad293f1614e94b21cecc821409922eea1206bc48fcfa26c765bbf69be27c714e41161c",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}