{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43213",
    "entityType": "User",
    "nonce": "0x723b32b7d3fda630d0c09c61bdb989d6e480ea5b775cef7abc09307991eee452",
    "signature": "0x985382d486454664e6b50ae23d6d70a92b5f5e8cbfdb9c459ff6af92958bf411275112909d477e2c4affa9eecbe9ba293bd3be0ebdf79a1b5c1674465e3d9b461b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}