{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100",
    "entityType": "User",
    "nonce": "0x94c2212b84e8c702b144260a8cb2d66fe6406086a6b06e0daf135450502052fd",
    "signature": "0xcc3ab1fbb2f4645033b7b770ede7a22c9c55a29f002b174f48351d062bd8c17e0f6699405ecbf5be93d1fd57434449fc8a54d4e18ba1b6456cf536ecc956dbf11c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}