{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "637372504",
    "entityType": "User",
    "nonce": "0xbba1793175ffa8e1ef8ba7e24cff2574d091ef9414b23765abfbf30fd26cca60",
    "signature": "0xae00e9536fe0f4ea0c75584ce70fd32608a16ed2244a363d83f2a94c98cd50822022b3b51d9c74278b40eb5a1534994fd7fd5bff1414e00321aa54e58499c7261c",
    "signer": "0x3c154BbB8f1ac3df4a7721Eef2A2198c385D2a85",
    "userId": "587797478"
  }
}