{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121125",
    "entityType": "User",
    "nonce": "0xf68c78d6d3334b2e1f6d539c57269cb914e0c68afb05f742a73aa7219e3a0bb7",
    "signature": "0x9b3ff202e76c510e418991044a69a1438a39982a7455df67c68604d358c1c08b2a3c7b60d4e7523f17178593abd5169cdbde34a143eb2db8270136a7fd3317731b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}