{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1684",
    "entityType": "User",
    "nonce": "0x2305dd6d28b616b992ccf575e3fb62513baa2a65cd56799f6d6b071f37fd87ca",
    "signature": "0x2e8544bac79e0199fc7176fd81d7fe01fbb46f1783c1b7eb9466c768c2f42ebf302a148bd543db7e67b2a7f87663d67238712f446fa3cfe2bfb5465bf10c19551c",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}