{
  "manageEntity": {
    "action": "Update",
    "entityId": "478335789",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera32rkzshlxm2gpotowe4ysreg6vj5fqf52byfbfsuz5fs757gix6q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1795090246}]}}}",
    "nonce": "0x2c35489ca64dff478e77c113c73249364d834934441204dacf82e1e8d4285e8b",
    "signature": "0x3a92fe610fc289bc89270c0824d98531d6e2ccd0c14a18e61d56766f62851ccf73a80ef44de9d0b8587ad9ea5355196df85d6b907fa70b2ba41483efbe5b14d01c",
    "signer": "0xBcd1ba62a183D8CefD898212142d77532Ba7699E",
    "userId": "478335789"
  }
}