{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307340",
    "entityType": "User",
    "nonce": "0xe42ba3dc287b42e5a1b9980fb3a6607358d9c34e1045027802999c6ddd284223",
    "signature": "0xf8d9a86d01d5de15b0b120d346fc7770ba8412192e4af64adef76ac714422ba106cb432a415d5e79b8d981749dae4792cfffd2cb71b010bcded40ccb363a6e391c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}