{
  "manageEntity": {
    "action": "Save",
    "entityId": "792978064",
    "entityType": "Track",
    "nonce": "0xaf6139942a89d420601870208505aa8dbf588a110f3b39b4857e77a859c6a467",
    "signature": "0xbb14f536412edb5fc5944551d6259fc24b4615ec4764e39a0c241a256a63bf7a59c633e89e5bd05bcd814631fc5e5c9766527dcbe4db29ee7dbac75c9e5a72731c",
    "signer": "0x86639c74AAE287A0Af407ED9C633ba9D83645A84",
    "userId": "794995504"
  }
}