{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "977815577",
    "entityType": "User",
    "nonce": "0x653bb16bbd7290823ab9e56a3e6d53f112fe1041edec23af0b22443006e45139",
    "signature": "0x69a3bbff94cb4bce3c964746fde85095d1e62845d64bc2e71bb64dd5f5dd3e1b30938719998ab40b42f14cb68dfebddbb94255e059efdd1374be9ce1725593121b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}