{
  "manageEntity": {
    "action": "Update",
    "entityId": "392289893",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajvjrn7t3o4nzz7cxs3unmc2rlgltj2gqwci77xgmbin5dc5tcoiq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1839215861},{\"type\":\"playlist\",\"playlist_id\":1258371836},{\"type\":\"playlist\",\"playlist_id\":110319193}]}}}",
    "nonce": "0xa5f208b216b9adad0c6f2ce1d3660a62685ff8359578b000c22a9e6ba20edfb2",
    "signature": "0x33325594e127c97122fd611c056ad499c44b815122db962a4cc58a1a85a359561d44276589533635d254c1c11b0f7bb11e593a5991474943b087394ca0292e6f1c",
    "signer": "0x8bD50Caf0D290982E2705EBe89ED8fDCA620224a",
    "userId": "392289893"
  }
}