{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "65000",
    "entityType": "User",
    "nonce": "0xa2f3d1bc341030a066ca2b947463aafd2867dd55d8612aba3b74e6f17b066fb9",
    "signature": "0xb1b2b77fdb917340ee3bfc3b3edee8be6ae4d40240a0c156cd0d698c8dbaddaa7b8b004f0d77d4486073245b411641eb896fe7759d47f2990f015aa070f7ad171c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}