{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900066767",
    "entityType": "User",
    "nonce": "0x22bd7e9bf234238a0840187ff7bd563307e143a1ef15df1c6c1ae524998cb3d3",
    "signature": "0x999dc0416e7769b73e1eee9537d9344b8597b124ca43be4a586a7094125a308a7be81518405fb31bd65444a223b205d7656a4d52fad53f9a8ac1536c0bd0bd111b",
    "signer": "0x8b61B87EFfC875d065c2aeFDb0424BA7d522ce17",
    "userId": "723815891"
  }
}