{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213242501",
    "entityType": "User",
    "nonce": "0x86b3b3d687d303534b0aec7c175798a7317fc274d2d2a199c110cb4e8a7e5b80",
    "signature": "0xa0d2fb9249d92228fcfe3da93e702a35974d3217e532a003f79ac91de120c8e72aa05e1b61744ca75efa57a4880f1c64dbd36bacd71afa260b56a4acb22efc4e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}