{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665370465",
    "entityType": "User",
    "nonce": "0x4d262142063b6fa7aafb6fd00fdc0e847f38345d1af019c732056de5be1ad672",
    "signature": "0x673828ebe200a7c824ae54898c0150d1675407f5e9b42ac7bc5fc47904212e2721aef297ec0c8db32602f844f67225342d87ddc6bf367ee45167f29c19289f941c",
    "signer": "0x41E0D919F5E5E950b3646cc2545AB0d2c70af998",
    "userId": "962472503"
  }
}