{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "767848396",
    "entityType": "User",
    "nonce": "0xa22bbe2bc3afe75ebe1a9f4dfa7cfb1799f4d4f395e1b122a81c058eed172623",
    "signature": "0xcdeae4266329520aba1f96dfde3523915f6e5d3f6d54a3d4a11dac60eab3b9b16ca2bd9534b0ee98bee1ee05d0b2acdb2673ae2f76a5f95c92f377cbbbd2664a1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}