{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381638009",
    "entityType": "User",
    "nonce": "0x1b83631d1df4f900aeadba436ae97f91765a19a9c0935a67dcc00476f62275e9",
    "signature": "0x7ef5594a3e33efd67f60900745a3da168a1c1d55db96b2a0f3c9e61a168c04a567353928837e15303c9ca80ae6352e22e27b168aea475c4bf18dbe89e8f7e64f1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}