{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "698859",
    "entityType": "User",
    "nonce": "0x3f22e0bc1a984bee23cc8bd781310e218b7d1b1b231d1ed2fd5f72c8faa0cd5c",
    "signature": "0x1cb9bb7bb16763129d46fc3ee1107587690973b49700df52d6bd57ebc780431756fbdddf7bf815605f600ee1ad20083cad3074d7a956278051349c353023b17f1b",
    "signer": "0x646BEca96ab04bFb6DD725EEBc0383e1Ef13deeE",
    "userId": "588448440"
  }
}