{
  "manageEntity": {
    "action": "Update",
    "entityId": "776459554",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x80bc3729c089566ef38ae467da36ec6109b59e4b17002adbe451be423f367bfd",
    "signature": "0xa82a4e5cc516f42a0ab2e04bb000cdde134145d8f2c5abce115e77ef3d73824b3f2a0ca351c5d0a9758b7fae40527200efcafefb89aef5ef63dbb053d7344f211b",
    "signer": "0x15d26005E9e18Ac96a165a2c593B5403fF71BF77",
    "userId": "776459554"
  }
}