{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136781",
    "entityType": "User",
    "nonce": "0x8210aa2afca3fc5b7ab1e0397faa8e53221307878c1eaf36a5796c6af00f7918",
    "signature": "0x7cfb8da4c55d4fa76d64f7ee12da868b9c04d58f2c32b14be18da357ab7d20850148e89cfed30f497579b95ef5903a734a51137a43471d9b67f556409cb8aaed1b",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}