{
  "manageEntity": {
    "action": "Update",
    "entityId": "640804276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4f54f37bbb170ae20e1917b3d2d565386e05e1ce803ee9fb114e3e8843338149",
    "signature": "0x543e3dde9a1fd9a3b25f7a539ee6c123e5c644a320175bc2391eb9f7f90b52390f53d918f0513675b833ec8342424d89ce9bc40e57c8b9b20d9bfcd1a484e3381b",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
    "userId": "640804276"
  }
}