{
  "manageEntity": {
    "action": "Update",
    "entityId": "407046354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd99d6c7106db705ce8431e45210e5f3ae9248f7bb86bdb8a5af0b61471da89ba",
    "signature": "0x379bb566900835076b7eacb9cfb2878aabdd33455e279a1995852a1958e7513548c9264c6b0cfd880b0fd2d798827a41c7963e59c9808a05f2347f5a6e3edbe01b",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}