{
  "manageEntity": {
    "action": "Update",
    "entityId": "602430498",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1f9198e4071af4d993063713f2e69f7025278f0669828e6be4254c1ccd90906a",
    "signature": "0x8193ac9e10990dbf6753053a1585f6b66e790a6f382963713c2d77556c6b456a324039a9bf4eee1454a7bba0fe58a4282af25fb493cf84f32b954973a211c9541c",
    "signer": "0x6d75bF5debA06aF9d3258742e974B93dC4fD227f",
    "userId": "602430498"
  }
}