{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x77891b5358b9708cdf48780731d0ee9d3cb0739a07611563c33183d843741dbe",
    "signature": "0x39b7ef08933050f72b4f0959e787c71aa1a5a13d0a38ae9f996944cbb7d96fd36dcad613584b786b3b1b04567c1158106affbb36f039ef12644f39f5eb18741a1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}