{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0x2ef0643d5a8bd6cb8dde900c1eb89b0b366bf06ec947bb79ef85ff6692bc1754",
    "signature": "0xd6882aff64586a8a283a0cd126b39945476f680707f0335c34ac9f4a16ee85d2387d11377b36e881e88d3b56f701ae5b33fc065ec0720e21df8226bfbee8cf831b",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}