{
  "manageEntity": {
    "action": "Save",
    "entityId": "1668436653",
    "entityType": "Track",
    "nonce": "0xe415b5d109c31e2b88608ef321f895984e553c029476a48b4aff530223f98fff",
    "signature": "0x5b370e523d15d42dc9725ead1bca799cd842d510c4fc341f0dc7902ed2710b2c460c016ab76826872124939079d930ecb84c2ce05474e42e573e8284791890641b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}