{
  "manageEntity": {
    "action": "Update",
    "entityId": "305864089",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf7462a1e2205fd229125e4b852693ea518861f898edacc23b4de1e2fc5a1c150",
    "signature": "0x07090394c1c53289a28f8c3b1bfa9f4bb62ab7738ad7f0623819f39488f6a88763e0997459442d6236e2abe3042e31e4a3aa595c3648291e2ef29fb7f3d848011c",
    "signer": "0xDECc0A356D9aa0931867C3FBe28D5c595B76cBE9",
    "userId": "305864089"
  }
}