{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409229",
    "entityType": "User",
    "nonce": "0x71f066e0129573ab0d4768f638f89471f4761955f34b7ea0953ccf5ba054eaf8",
    "signature": "0xc3547754af039ec92fe65c422eaa302e620c8a4351b3720aed2ebe49e40ac8192cefe8b30a55fcf2ea662d4ba5c43bfaa98293ab3db77481027c5c973cd03e311b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}