{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x60f19b3ae187a99728b96adbc77dc3bada8ef926a7a270d177171a0dd99b9aa0",
    "signature": "0xe9cf7b193d86a72115b4294dd7a3dd5f7306df840dd8e0339b59acc21921d24a3443782a3a38f494f3da230923c3bfb6b9e2aaf06324b037ed102c7ecc4ab0a71c",
    "signer": "0x2F87B1486fdD89eA9502284F66715d3f10DF722C",
    "userId": "598394819"
  }
}