{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4b6508195bf444ffb00a086c10adcb28b687b4c68e3db731fa5202387db952b9",
    "signature": "0xbb64b73cbebe5ee36ddd94d3b2d2ead67feec02246c164c9bb7312f0b73d46eb702c7e0250075909d53c994c33511facf9bea342290a7b8981b17e19b2d537a01c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}