{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x321cef484a3548490dcaaab9112bae703189cfbf8aa772c6db5b25a1e5535c56",
    "signature": "0x7b04b8298dcebaacc70aff0125b86c0484df033d5d2e8580c995fef9fe432860606fbac09752c581d2bdb2748e03190de8603c8e7c4586f936f8f6292cb667f11b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}