{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x6aa13c3711391fe50770fc5678bdbd7f194a26248ffb45579d0d9fab9d837005",
    "signature": "0x63ebab1cb53100cab92f87e5ebebdbb28b87bdd61f2abeba04e57b0508f5e7155b32e4668b95abc0773f20ab9c0b04a8a8ddf2e272ac8ccaa8d14563d6dd4d6b1c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}