{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1577853",
    "entityType": "User",
    "nonce": "0xe04b513fd14b34c6027e2be8224030d89911e4ece303a78cbc279e882b91b897",
    "signature": "0x53bc0b95db1dd024d31731c56c45d8aa82af90e4bf48bca5a653336ec35ef59c5f423c05aee09a37d6c776cc232d77e6d85c783129341878ec520ac935aece9c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}