{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0xe14b1fc58d36414ff435441429b895f1a8829963c1f10d3d274e95c00c543b11",
    "signature": "0x2841eceb00120477d043accd2549dd01a6866cbefc18a98a18ca224ad56b8c2236ba389171e1d9c07fb610a41e591b8d71d2293972cae3614627c96cc31f2e321b",
    "signer": "0xd12A323399559A3773F865c8F21031bc39c29135",
    "userId": "219968466"
  }
}