{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10213",
    "entityType": "User",
    "nonce": "0x5b67759f4dc4952e33e610154f9dd5f6dcf1934b7c6045fc0ee498db2305bcc0",
    "signature": "0x13546a401d866bb986d2fe88e710073ea606c9aaafe0e572a329d38886a639c6489e49a543a30135a54ec12d6732fa74a78edf6f4122049ecdabf4e0ad9a5b341b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}