{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "925208878",
    "entityType": "User",
    "nonce": "0xf6fc49260fe4706494d4a750a63d3a512d1a23f869886f04c14697bc61f558d2",
    "signature": "0xd4e7044fb87197d69e34804a505e88070a6066d0bc1d8ea3bfb56c01bc24c66c4ee0ea0561e7f610d2deadf2d96c74c7a4486e496d82fee11754d40ee52a77141b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}