{
  "manageEntity": {
    "action": "Update",
    "entityId": "39089899",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x44782b6a1ee65758666d4d67a49abc3f0dd3525a0b2247e139f6a35aa1a94cb4",
    "signature": "0xf943e18c82c5dd5e1369ef351b889802d526305ec26a020681bb11d15b0996db35a796e2acd8de69edc9a8838ab1e4624ddfd1562bf7c48a20a21951ee94b0971c",
    "signer": "0x145E2967a4b3eA92C71b6f58626d72923c4ad37e",
    "userId": "39089899"
  }
}