{
  "manageEntity": {
    "action": "Update",
    "entityId": "551705448",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6b2a60256eaf4ef3c91eb437866dc2cb687df6e04ac1ba00327003096cbed3fa",
    "signature": "0x411621edecfe60b51c4c2f786137b0683408cfa811f9bc5259cd39dc6acdd4cc11acded8bca2661ad1bd0f78b4449393f62fbcdc891ca316ac8fd3173a8a1f4b1c",
    "signer": "0x014bAc1d10CB1E2654FEec2313cB76aDFe41f1Ad",
    "userId": "551705448"
  }
}