{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778386944",
    "entityType": "User",
    "nonce": "0x0f29cdb95fbfd3971fb7e04447675ce24c60772cbdd67840d2efaf6f04770020",
    "signature": "0xfbf87429b845aaf4e2f27f9c12ae4f145d9b6f1bb5b78604555d4bf1fe656b5d3aa9d994342efdc37506ce1521c6e5e193057d7e22ed04bec11ee2fdb50906c71c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}