{
  "manageEntity": {
    "action": "Update",
    "entityId": "547925274",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x72b90645a3dc0eef1fc2dc3d8695910bf81c66286aae1100b8e5e4244ce02063",
    "signature": "0x8f5c7a021e5fad1c710e6550bab3ace0ab143b343c0b780c1ea9afeec7dc76bc25ad51e707d917a4f13715f5d916e58a648c95a40dafb913f9b2886c080789551c",
    "signer": "0x129cD5f15608Aa6d10d553f85023e9f6f6f30d9c",
    "userId": "547925274"
  }
}