{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "773501378",
    "entityType": "User",
    "nonce": "0xe05be6b5582db1538cf684263a2aad6224198da0eb1b4b43d704232959b4a0db",
    "signature": "0x48fe63af04cb3d7cc23a66a80a38fdcca34ad606f13b272b849842db7a8fb4ab12454fdfd4a3022437eb5dc78669166dfa68ca9901999583d7e63a70b9fda6c21b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}