{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123543363",
    "entityType": "User",
    "nonce": "0xac5e0659a28dae28dd69355a3fac541cf45f7d14caa14265f8d5a4acef101fce",
    "signature": "0xb0a29963545ee554a30dec729c723a695fd4dfa273c97e82e089e2f170a488e072f68de8522dd514236f873c47dda767e723c12f826d9d3d556cb055a77904dd1b",
    "signer": "0x375963f281CEdF4D9D180496F80A256D574daBa2",
    "userId": "981824750"
  }
}