{
  "manageEntity": {
    "action": "Update",
    "entityId": "650714154",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x57f20544b709054ee693d6138f638e2a2fde6f941090ec7fd400b4103688b5ee",
    "signature": "0xd171a72e89b83c96af99e4cfb69b94d306331ab6a24494e4fdab65042d7fe5f47fb32840e6c681df534e54918027b55db0c40a9e1c98925c8514b4d43dd6283d1c",
    "signer": "0x4611Dec6A3065fb4F7A23A8F14C1c300A8Eec7C6",
    "userId": "650714154"
  }
}