{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837401412",
    "entityType": "User",
    "nonce": "0x6b78c6e153ab274e28393fe8c088e8e25eebca7c7ab7bf535f64a34e47f19452",
    "signature": "0xb696af0f429f9b60d140606fc69e1965a75bde0da8fcf5ea13f9d5d2e90dc39d68c3cfe7c1eddb3c46b1b2c428cfac4bc55e19297a1f6d5497b788a0f55fba681b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}