{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15014",
    "entityType": "User",
    "nonce": "0x421f4da9b6c4c20d3420afeecbbdf6c9c97915ebc3a6a007c39a995b89231905",
    "signature": "0xf03292cda280df828711bce1e7ee039361d51f76f3289a5967092f62fca4fbd835ab506d49405dfe846b571ab96c24eacaebac4752a3f23ce83b010643fdfc091c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}