{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737613010",
    "entityType": "User",
    "nonce": "0xefadbd98a02c71a2eb546e5e97e8835336442f5a72a7386225037bbab248256b",
    "signature": "0x14ec7df727cd51a7c5d2af4b84350099eda5fe699c1290cd8d1577857e52752452b9b830641a52408775072b232f7448c3ec468de2c4493fe4209dce34fb7fdd1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}