{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0xdf00771457ef0662de6c99fc20df50016f06da83702b4d7c5d8d2f3c4dc761df",
    "signature": "0x998cb5399af8bfed6e2b6d27297f63d6075962191ece7fd8965541578e88b890293a7849b1fa0e551ad287bfe1de85c82147bab7262832c26e3a62d48b7baa3a1b",
    "signer": "0x294F540CE80e30CBc9Fb7bEA94F956ABdEcdEf68",
    "userId": "809640913"
  }
}