{
  "manageEntity": {
    "action": "Update",
    "entityId": "590628208",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6a5ce7b30fe0daa29f5052e91d9350c2d55011126495f630996a1079a26aa342",
    "signature": "0xeabac166f2feac88f8c8e2686cbe4ffa9fbc5575825fa72dcdff089f7239b94015840414fe1bcc2d32edfc626bc5e96fe5658a582217f0675ea6b8379aa0fc141b",
    "signer": "0x4ABf9A66a3AFeBa2CCD607dC639F2C9b05B67eF7",
    "userId": "590628208"
  }
}