{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120749",
    "entityType": "User",
    "nonce": "0x9800fc9f0cd574f4d022054ac2b5c1671312c005d773516c80862bd391b9b7f0",
    "signature": "0x517cc946424027553eeb78bf81008b3c1bb43ff049db01e33d4f7c882d9f4a493fbcaf1c65dc8606c77a6336dd687a2535e9e2549f462af6bba005ad70a62a521b",
    "signer": "0xad1E2A70fa1227797344FD6df31327a26552461a",
    "userId": "153162"
  }
}