{
  "manageEntity": {
    "action": "Update",
    "entityId": "812778388",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5b630aa13e29217963f439fa2dd877393e7c17b41e56fa7ca55578df06da6c38",
    "signature": "0x1ff9969164a1e33939226f46edbacc53b69e2a200c6b7f5b0ecc4fff490576db70e27e38cc52bc5407dc55eddcaad19dd240ae489901ba9725d3e43ee6aba1321c",
    "signer": "0xf7Aa544bb3B895424fDD1bF0b8D1922AC9488Fba",
    "userId": "812778388"
  }
}