{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd50a8e4577ac8eb414a6246c58cfeb2207975515bef416bd8f0c3eac83d3e2ac",
    "signature": "0x4ce43b4c7a132f9859f2c7cf01d4fa82cf6b3384c0ed660ad6dcd8f98bc3bd193aef11fe8b0e6a5d02d98f46f3af67b25d7bdd9482c614bcdf8e138470aa73441b",
    "signer": "0xfeC67Ad878159a4F2DaAaCbcC968194928EDD306",
    "userId": "812315549"
  }
}