{
  "manageEntity": {
    "action": "Update",
    "entityId": "358978654",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x54d609222394732a1380f14023fee0a20a1891f40584b5785b8a2d1e46b9c9f8",
    "signature": "0xb1f53a9f7247ca3a333f3fb413ee32efe68b3dd18dec2a347c771da58535c8653a24feb0606576d7a934a0435258e0d6aa4add5d1595dec3e21cb91d35203efb1c",
    "signer": "0xCA64BbDA27D57e38d67618952d774b5973744080",
    "userId": "358978654"
  }
}