{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "511280302",
    "entityType": "User",
    "nonce": "0x37c8d2b108d1df328fe6a6b59d57ce31a8138007ca70d57712508fd7b65b8772",
    "signature": "0x2426a7f0e5d88719953244b861e0f7b3d9ae7559faecc83ad381935d964e0a49774cdc7faa1f0e83d4486fecc74fab41b1a3dbd2a545a5600ad07e99574d89da1b",
    "signer": "0x33c702d534707f8Cada5DdD521C5900827973f1D",
    "userId": "5642"
  }
}