{
  "manageEntity": {
    "action": "Update",
    "entityId": "498040175",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x475a607f3301f096cce97c0b737b2ba0f313439eccf1826a35f4761f40ec6488",
    "signature": "0x31da421434bd41ed1e17588ed55a64aff0c489412035a0529cd01c40f4771e1c1df401826a67bf04b55b49c25bb2546d3399fedc5d7c07b089c33fadd88ce7bb1b",
    "signer": "0xA37F18aB158e689Ac6955f6767232C266f9f35b9",
    "userId": "498040175"
  }
}