{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "730731",
    "entityType": "User",
    "nonce": "0x8544624099d8bc0c0f596398a3414fe39e60f613ace7631b53a4bfff5904f3fd",
    "signature": "0xdac90ad396b5f986465584bdb47e23d3cfe62d4e3d9033537751a61442db3d973981f7493a96bff44f70a1ce700e75e852271873aea837dc14a096b7d964be841c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}