{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeec15b99982a2eb9c3500d3b1ac9da26186294c915f26aaa46084f80363a0783",
    "signature": "0x03da18fa6120f69dfd511a92ffdf9754ee36438d691b76659dccda79be31e180192acee41b1147eca8d0638a48b7c22f53620175c7125435500204b3fac8e18e1b",
    "signer": "0x7f78AC105A4fCA67422D94402f8c3F2d9734a36c",
    "userId": "388106302"
  }
}