{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "196489",
    "entityType": "User",
    "nonce": "0x2b6efb1c696b42ee2e13b0aa4793b795b7e10fe5bce64a658a37b0a08a80a7e8",
    "signature": "0x9c301f0e97b0d603e01db0ee43a233049f9e6b98ed48b88a815edb427c9e7eaf01a9985d6bc6fafc537b2546e59113eef777b6779e0a9764f4027a6daf52e6741c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}