{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xf3fc6ce7c72da58efd247c0006414805837e956b5210e41e1e81c4a8a5eb4595",
    "signature": "0xb762082f3dc64ae7c0a33a8f0f6458b26f6dec5456bd731dc4ccd429572a5ded3250eb02d3aa22974ad2dbef0cd5a813d0bdb52c11430af39ccf84ecf2d325e51c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}