{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf5b6b3400b687dfc48b04b7929e2805e2f1f5a011020a6223b908b5d1e0624fe",
    "signature": "0x16721df67bed762f140b9e2b08a4275406d8a3e996d51714b34eb886aa06205127067806f4ec7848dbce1b1303f1493135754d1c07dc2313e31272b8d4ec38491c",
    "signer": "0x8a8d1f785BEE5d1AFf57c8A2fb985f723d6BC856",
    "userId": "256101298"
  }
}