{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290909",
    "entityType": "User",
    "nonce": "0x2f376e9f3847c33be02294d1a3be40d17f6fc1e5204436b96060415c2d26ef95",
    "signature": "0xbfe115081dbe7e975339e7140d7c8a697aa653b36bb39208e24bfc169bb30f482ac8a607d05b4f2b64a7d8273c1f9eb4e096695c4c7a42896f1420facf26dc671c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}