{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75491",
    "entityType": "User",
    "nonce": "0xe531ecc099590cfa3a4c2baa9e62703ee877991d4bf2296132cbf50ec3da204d",
    "signature": "0xd270c84efd0fb365e108d17c04d86b681562eb525370b7581f9407adc59b2dda4dfa17a737ef189e1109527eccbabfa1b7f1161afa5781b07c199d24ccb4bcd51b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}