{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1010728",
    "entityType": "User",
    "nonce": "0x052acaa5f72372dffd49f36e4ea0f359c4f0f00c2e9d77f7adddd3f0fd5a73de",
    "signature": "0xea5e8ef782b07034552362bd6d446525396894343b25efdb95f500a41cc3b7703ada0ab0bae286a120860a0bb5c111aa39b4adabfe6265eda3c39540f51367311c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}