{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xc98c458ad2699dc66c5ec071987c4cd67abd14f4cf61849a77ecad08708f0064",
    "signature": "0x472552768160690b5a8d4bdbeda8044f97ee251a65d31483099da41dd5fa490c0b3b415ee53ca9a863986ac534bc5e04337f71a4df3239853b40e3d7dd6bd7f71b",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}