{
  "manageEntity": {
    "action": "Save",
    "entityId": "364224",
    "entityType": "Track",
    "nonce": "0x0cb8682c6f5e82e76a5e3f3281409019ee8ac162f4e4b38a4b48a001057978ab",
    "signature": "0xafb72f94b34aac2ed7f58f247d7766f9cdcfc4193a8ea99c2c893bb3220827b51dfc145a44851ef5269f8f5942d229abb2163acb43058b8a7c1be6ed6cde13e31c",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}