{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x644de37cced230bf92a8c34a4d71e1b258392228f7439506ec80625e54716078",
    "signature": "0xd1dd16c042e4dd046b9ef35ccbe0675597ae7ad529709c42e761619d2c7816024398a00a9d0a46e4a7d20c3f1c98fac0700b2fefb0eef107211ae5ff798f4d261b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}