{
  "manageEntity": {
    "action": "Update",
    "entityId": "273007816",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x52f7fd94ced1683867182e2773b8bb8bd97947848a536653a1c2d30be73bb0ad",
    "signature": "0xbd55e8e7aa829581ee06d45b8e8c0c25468253af1a64e181eaf883b885fbf8b55f81904a92f741b849d230b807e8a77000775f288ab7de85641bb9cb3a8dee541b",
    "signer": "0xF289E74EB5E141E367e98D78c951C98e093E6Ae4",
    "userId": "273007816"
  }
}