{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0x499a919c3c4da91b4eb036be58c97f5593b1356cd4af2f3cb6f4beb1ebc4dab8",
    "signature": "0x1939721838472901f339188ac1544464323efb933636a2a577769391bfb194d768c0d98ef2b7b6cc09f3755b21b00d37915060ab0989be6c91f6a798d23ccd831c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}