{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72723424",
    "entityType": "User",
    "nonce": "0xa70e0b7a77e9a9985e8131e1760195a2492c414b2b7f3b655da54a5e2b3f72b2",
    "signature": "0x13d4ac392d865c96ea05b451f1979170a15ec206ac523f0dfcf322bfade6aff3603c5f032eadfb7863aea82898a405cc017d55791dfdfb940263180e1e5c59781b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}