{
  "manageEntity": {
    "action": "Update",
    "entityId": "220882196",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x43fd6c3470519dec4c9d699d45fb972292559fba0310a5fa8d4bc79cb2fbc395",
    "signature": "0x4046d739ee4ca3ecc00bda9e434d0fb7ba2f8359b0963ca4b62c9822eab70bfc18ef1ded23c5dd79974640650b108ac9bc3692fc6cbe48109d17050cfe695b471c",
    "signer": "0x950801da2E0c0D61fA76CAb96395566E18eC88f4",
    "userId": "220882196"
  }
}