{
  "manageEntity": {
    "action": "Update",
    "entityId": "651857432",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7fd4a88f4d6de50e0ded4f5e905703d8612b40e0b1bc94e7d5be1449fd28e01d",
    "signature": "0x8176bbe0f227d95f7a6f213614088d94f3f4e8693cc7f27046c2b2607a8029473d7b54c81da0c165d4505f2ed0669a6cfe20813b4e737c94925a67e063e8255d1c",
    "signer": "0x37db63A0ff3DDE75Df3eeC27686e2E55B3Ef03a3",
    "userId": "651857432"
  }
}