{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "221760",
    "entityType": "User",
    "nonce": "0xddff3015993e75efd3438f682e65112a7757205bd676d005262b58445e79015d",
    "signature": "0x2fca8e13a1ae1e383c7f948404f93fd9ee678281fb09486c6429d9eb79f4696d0377a3c2ea69341c9a132a7c34d5241fdd98f5d1a71cbe2aa1f2a3d7cb01531f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}