{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x17c8ce54d2dddc0a1ebd27c4e4bdbac15d13ffaffb8c23c649c7e99419fb20f6",
    "signature": "0xb0f09191bad07debee40e53c5d8e3c6e35be4d8325be41e0d78884a0c2a58ebe01d8735065a8b25d2c6c85904d30288ea2cc7ca05801aa155b47da00fb25c2961b",
    "signer": "0x60503113D254c437C2ea4c18d70C8a9e20fD871f",
    "userId": "515269421"
  }
}