{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "578014057",
    "entityType": "User",
    "nonce": "0x22fcac36463947266d50e9174d42e3a04a6088547940e180c5ea24cb2f78db28",
    "signature": "0x36a86e19cee549f6d5f80c3d418c84ea492a2cf79bafe028493fc06aa82d10ae20fafe981d6af8508cfd5445ba1cdf2252756280d6c67b8cf70dda8a945bea6b1b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}