{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8534f7e7337cb6a3416e147048abd0552d580d875a00e5c4c17b1897292ed65e",
    "signature": "0x911e02b5fc9c8d2cb5160ebf4e918515017dc302687e50fd70a4dcc1045b812a4a794087ec82a20cdfebb280abab622a04e753ef3d030e1fdcfb0861a67bb1e81c",
    "signer": "0x13bdc51d4d7508fB0f9902aEBC51eE295FC17d4F",
    "userId": "986273531"
  }
}