{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53299",
    "entityType": "User",
    "nonce": "0xa4b9b54e0a117515d51faeaf476093f91068279d7f833a63cc8dd2386b6aa6db",
    "signature": "0xede115a1548b6f731b7f78ec1ce35a777f0596e97ffe55feb0e42a53a3f92ec93d007341458eab69a0a9fe3ea3c5a0b96cbe56b1a70cd80506c0daf9c963b9f51c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}