{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "977815577",
    "entityType": "User",
    "nonce": "0xb73d916e43f360d17a77a9971000b8b3a4d44a0ec3e62535af6ab66e4ae3a18e",
    "signature": "0x1a89a0a00c54ea41b7b68c6e18f7dffd1a6f2c770ae239f885d600c751eb9f0a77f7241d62f9b0fb2ec1c140b8b63d6b08027a4cdfcf75a843f6412ee313f6c61c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}