{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306444855",
    "entityType": "User",
    "nonce": "0x25d01acde1bab08c406ced303d94346171fc8276e06c9e79b78875b3bff1c67e",
    "signature": "0xb379710e2b9a9bd59cfac541b1c3448481baa3ec9488811ecabe1f62857ad4cd7ebdd8f1120f31dfe415db1042e8a0e1a337f440ef6b502acce7e256146e6f641b",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}