{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258307",
    "entityType": "User",
    "nonce": "0x505430dd3ee8c6fcfa1c027a7fd0de54b86a4c2c3dad453b7bea2e0742de68e5",
    "signature": "0x9449eb14a73e41c00475e2c973c55519102459722dcce38bfa832fc23521405a46ea8d97b6432587538eb8723e858fbf20e5665751c3e6575e2acaa9481cabb31b",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}