{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd5834cd187332c17269540fb7e0e3eb5ea5efb8d9347af4649958f242983a5c0",
    "signature": "0x376843a3fc81d78391ab86b7ca617afd786f581e5487da169b4c89fac7db87344f1dcf49fcf7ce9b1dc00ea622e7d7df06b93a60754c28a82c2c49c86e5eb8831b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}