{
  "manageEntity": {
    "action": "Update",
    "entityId": "293137833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7f5019c593d41b5870441146eb206561e9ca592003168aba0fb263b01d00e0b1",
    "signature": "0x5e38cc1e374d3a8fc68a585daeeeee5c8a6b0dbbe070743e2e2e0aa8d918af71101b56f80b3439cb399ab04e23199866aed287b25ad1b15bb39029211845804e1b",
    "signer": "0x9139bE80Cf6D934A072B63279dcE183f715CA770",
    "userId": "293137833"
  }
}