{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x48c5c45b0ae875dc9366d9d9eeaad8d39bd5262ebb6662c94443bcb58348c06e",
    "signature": "0x307d97485f21ea2609bad0fc6106fa282095819b05cefe7276479f9b62b876ba4ae234fc15ae91c7bf42d8bfa51e0d78f474dcc1f1be8b402b2eaae8aa875de71c",
    "signer": "0x5B4864d2EEcc44e610326c5d6F07D0300C894A76",
    "userId": "627289956"
  }
}