{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x39818e37283e0b668872f2bdb9fd404e3d779fc9804549c5758dd855a9466f0c",
    "signature": "0x970c0a09c1761eaba3d132ba280655f50abc2f6c139358504bba4392dd75307c1c6ccdb91a281875af917bdcec768ffc22fe639d72de651299f1db1e0f5253e51b",
    "signer": "0x07D88B6447585F78880146Aa4534A574447C9D3c",
    "userId": "193758733"
  }
}