{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923480019",
    "entityType": "User",
    "nonce": "0xe60b54b17e4f074e52301f666814f7a237b3181acd41f2ed84deca7a24d99a01",
    "signature": "0x0543bfbc236c62bcda5f31bd02b73cc8596c6e8940e295ae69ed91f7942bb8267102cb1200403d77e36500ea1af33a3fa26f512bd6c0eebec3bcb51844387d111c",
    "signer": "0x5B83E7748cF8e414B76B16e39d629AA8deDB4616",
    "userId": "604013128"
  }
}