{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4455",
    "entityType": "User",
    "nonce": "0xf078116af5c4d38b9bb663a9e45d1c0ee799169df94ade41d72969a83010eaef",
    "signature": "0xc6c33acadf5ff3908f6457d47a66fd7490399054057697800c2199599aa592e01813c31abd1f1c0ab2cd98ecb6d315d751e73c8471bf7ba4b66150e41d949cde1b",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}