{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307",
    "entityType": "User",
    "nonce": "0xee467b49d9869dd9599a3a67cf52a8cef683d0b0772549dac4dc93ab17e4ef88",
    "signature": "0xe7d123fa578cb90d45470e6600948f781dcb452192527360d1f8dee51a1f0df057131378ad2093d1bf06e66525c0c52b2e159c7ecb1ba626cb1836754b79b5911c",
    "signer": "0xF6F3Bb01882EFecE0434BEa23F34C89A99b978dd",
    "userId": "657190079"
  }
}