{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16151",
    "entityType": "User",
    "nonce": "0xd919f52287e92c51f54502f2938e64efcaf1c3c6cb39ab233637b2c59131867c",
    "signature": "0xe4954bd912812308d034d3c017e375aef5c5533fb7e39c59ecbe39731fdd32a019bc1df18fb414df4532d4c836db43038c44d3154936ceb51bc7a39cfbd06d911c",
    "signer": "0x3776E1D82Ebf03656FA9D03C18fd5B58D7Ddd337",
    "userId": "83331354"
  }
}