{
  "manageEntity": {
    "action": "Update",
    "entityId": "153487043",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x79154bbfdfd8b54e9bdcfe5ad69ec1c5224d24a4b85caa1e8a8d9527a930d9e3",
    "signature": "0x5159253dfe201f128c44123db31b1cc8aa4728bb33a0dfea4f66e8dd218a017430ce8545fdbbd4690c72bc5ff1fd4b291906a6c190cb7715e8ce607e993968f91c",
    "signer": "0xce0c9C40e8bAf81Dfe84A8a6c556f0832b0b992D",
    "userId": "153487043"
  }
}