{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x80baafcfc1fc6379377fcb730136a23436aa993aec5de73148e8811cf526cd0f",
    "signature": "0xefcd60feebc45312d78c8495a66cf6ee5c26deb3a8cbe610d52dde776ab67c5f0235699bd48a2bfff3d8a0ad21daa9626dd662c029b83b8e7d057b7cef5f30971b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}