{
  "manageEntity": {
    "action": "Update",
    "entityId": "392873011",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9144bf5eb1cd40da135ce38d6e648ce5e86875edafdb66f2f7b23230b6b86782",
    "signature": "0xa33e6c0e99d9e47dc620de8b798a2fbedf3a540543222ee8fc90053e5f0357c939bc633b573c8d46552f81ae00de5b00660eca64214fcf6901f02fea8bbd49491c",
    "signer": "0x4FD8D9B08667CCCa706De600C8242dcEFF01d9D4",
    "userId": "392873011"
  }
}