{
  "manageEntity": {
    "action": "Update",
    "entityId": "866894265",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9b55216945013c27be935ab6dc7e239743cd97a48306aba5374430792e32cd3e",
    "signature": "0xc0b71ca7b5baa111b5f0df3777dc333203edce165fbc84beca667a7fe8a5df6b3e77dce3cf7a6709cd39b5124fc0b1db02155155a4bcec4c372d832fcd2da3eb1b",
    "signer": "0x4F66b0Cc2B7bA1e7851669BEa8D0cA1FbE6ae977",
    "userId": "866894265"
  }
}