{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "901870302",
    "entityType": "User",
    "nonce": "0x267e50ce397b76aa439a26430c7099f3196807641c7863f122fc21382a76ce98",
    "signature": "0xe8d5faa41f6ed6b5889417c958b32315da40bb992346aa3a6354ac95744a5f0d454f3814841c804301983fe96b88f7a1ddd6bdb2c4f9714a6fb774e2543e7fca1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}