{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "765901034",
    "entityType": "User",
    "nonce": "0x6fd39e9f6938687cfb325e42838ba7febf15ac693dfd7448f5fb2f6fcef28345",
    "signature": "0x1d4de12c8d06f6cefd380a25bdae0955c59c73b9da7622b657e504482b5aa60410e3c37dafe6ea7409a591f19f9a03d388748bad01d7144cce34c266fff46a1b1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}