{
  "manageEntity": {
    "action": "Update",
    "entityId": "128365105",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5d337a1e14750c2a6d32794a5e9f9067ed1caa19863b0a6ef07a8a1a78abdf79",
    "signature": "0x2b2f695ee93118643ec4d115fc96b19037ec3a998484e0f7a0e8523b7729896a2c686be9372e22ccaac436c5876be679da1c7564e213d1953b376bffa9dc45341b",
    "signer": "0x831781d5BfA1e53a8D196A43Fa8eBF7D9DBF049E",
    "userId": "128365105"
  }
}