{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xd2716c6b37c40cbdae0927f9a0ff68b043f20be1834b890a987cb23d042eca99",
    "signature": "0xaf827a8cb4dbddbd92e5541649d106f3f7fa61a329758fb4708bd7f376becd8c4a0688b8b05f1482d35d42207a2b183aa0cc52eb4692d189ffce41840b72ca251b",
    "signer": "0xdce8AFD41B436C058DC5aCa850f232129F567359",
    "userId": "544327632"
  }
}