{
  "manageEntity": {
    "action": "Update",
    "entityId": "377240673",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x340ac49be5260e643022a2279b35b972e5fb60f89fee7d0a16b733f3a54f1b55",
    "signature": "0xb0854caeed35d6f1e3726b582e2a7d989f2c0865df5db8b34942d72cd722413737fad3262a87e8c55ef842fe50d5e0e2ccc8fdf82745a738b47056d51edb95b51c",
    "signer": "0xC470735401Ddd3756d0a420E70e3558F3430008f",
    "userId": "377240673"
  }
}