{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x0df696223966f4330681ebac24cef91753895e3a52f6b0628e5e8cd21914950a",
    "signature": "0xbd39066e071b784da5d48b07a6a858693b437e00edc753080f834a659a7e6d7d713293f6157c8ba0113237d0816987f1cf84adffa8cdbe3b3de68f67669a933c1c",
    "signer": "0x81a6976298DDa0B267D3c5C2581EF2671a909f4b",
    "userId": "410531907"
  }
}