{
  "manageEntity": {
    "action": "Update",
    "entityId": "610580501",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5256c142f27e91ebdbbba0be3aebdd0ba8aad674bbe6b99880738bd6ca8275b1",
    "signature": "0xa6db3c69abc829cd2bbb7079711c66c7952c01405406bda1cd202114700510ce3bade183f49cb837e4ed7c6df6e6423a14957ff3a22e44af4f3b2190398e32311b",
    "signer": "0x76D8d8830bD27953c4392796Ccc22F34B8F11E32",
    "userId": "610580501"
  }
}