{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304900",
    "entityType": "User",
    "nonce": "0x5e7ead9ed91f2f6fccbe53c3a4922ef486ca3f8da53468d7b540879e6153ec4a",
    "signature": "0xe49abbcf8278e57fc395cd071c12747bedda67c1ecca8a51e799037d120a3d183507898404c288e7397b7bf1df1c2ec3aa9b2240b0772ee004e0f826250562911b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}