{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0xd420c58a15634ff4d1c0ddc876af23475641262b3012eb7f27dcd2ca4b66b328",
    "signature": "0x458dcdbb9d06fdd7e221ff5a638f78d003a27131ea63a163686b23efbdd972eb23917bb509ef2bb43bbdb5b35fd0fbce9c4f0a120151b912d23d118ee74bbb881c",
    "signer": "0x1b8900f6b161d2A764D77aDDCD8F3Ff1f59d2294",
    "userId": "625897998"
  }
}