{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "608904109",
    "entityType": "User",
    "nonce": "0xe3af64aa0c4bd4ef778f218bec0feb8ef94edbfe686c167f4d8e7e2cbffc6b52",
    "signature": "0x9555cd3db9dd8ede58dc59d56aa63b72e421e33c35ce2602bfd370fb75e067b15779f9d6d59540234d04c40e27cee2cce71ccad41a81c9bf783fcefec3aafc011c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}