{
  "manageEntity": {
    "action": "Update",
    "entityId": "976132619",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x49fe6198edd6e6c9867e638ec0fa3802c6101e48fff11a33b34c7b0130869c28",
    "signature": "0x44121275188519a2adea05f8cbe6293216bcf61a65175a4a753c3a533d1d7ffd183f98dea0ccfdd4e19f6a320217f47ea5af30b0856838775a708879b5e54c131c",
    "signer": "0xcF5801beAC04340637889094F04324eB09bf4844",
    "userId": "976132619"
  }
}