{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708313645",
    "entityType": "User",
    "nonce": "0xcd7ca900dc454f254f6abd6d2e5dc8e2621f141178a17f646ef847f937064f32",
    "signature": "0x162d3fc4b5e03a984c92ae44e17541aeed5535f2ad901da35c27057d8d17e4352f0282c4468eb1b2791b685fe963a9c9a4fa0fff2b5cb7cafe5800b0cc73bbd51c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}