{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53500",
    "entityType": "User",
    "nonce": "0xab727c370b2bd24f62113210aa026e4c2a75a00d45c5fe5dbdb6c74452692d6d",
    "signature": "0xe9c3abaa5211f95fac2d28ebe788e06c49a2b826785fb32eec4690c8d4fcaf5d7f2046e0553df28431fb151489770ee1b6a67e86696abfdd41b4955cd6c28e001b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}