{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0x3819d6593c16e356e9478f64a3865a2fc8d0b459d611ec83c9b2ccd73722b281",
    "signature": "0xd81f8c538ad960fad0686dc8f258a76a6be9ad1b8efa6d043014b65dcf022d8e3ce95f5065a52a78f68073f78e4ae6ac1ff55df1439643659a8d32966e09ae731c",
    "signer": "0xEAE1c756dB1BE2AA6bFD12b24Ec5E1a5dFce3CE1",
    "userId": "324670697"
  }
}