{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1850",
    "entityType": "User",
    "nonce": "0x67e38af610b1da46a7211a010a292526b0b6b5de52a58c0b9fb72577cd7a914d",
    "signature": "0xca1e38ddf4c0147e30ea518f980878647c88daf292d75b30c254df6c2122d2e939dae24bf527787eaaccf34ccfc4cb875c6c3c3b8d1241417903e6a48d90e23f1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}