{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "668",
    "entityType": "User",
    "nonce": "0xc406fd96d5e030f9fe8678fcb6a72d1d9e252075d13f8c336498dbc5d2c07baf",
    "signature": "0x19aad8504797e54d9598c6cbccb906d349fd59c5a360ab8a3d7bc8d80042027719a56ad25ce59ec45ace760b0c4e8bfcd0cbe3db6b7ed66ce8b087ddcd548bd41c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}