{
  "manageEntity": {
    "action": "Update",
    "entityId": "551419106",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5e2068f77457cb37623abe57267744013738645253920c00997101d898b9f930",
    "signature": "0x63bd2348abcdf37d5735b13bdf681391626064bc0221310f545a2f32decca10e79559fa8cbdf9e00a7b8a1bef213a12db316bb875c8e26a4984e6244b9f418251c",
    "signer": "0x917811A901b0fed8b94608a7D4108FeA8161BBa2",
    "userId": "551419106"
  }
}