{
  "manageEntity": {
    "action": "Save",
    "entityId": "2026358184",
    "entityType": "Track",
    "nonce": "0xa366432a14f3b9d946163240c0d78756ec935656e5e26e7f3c0e0195fa2a4a86",
    "signature": "0x28465901e4ce4f9be76e72edf01d853acda2abaf97e8afae4f86ebf70d977dd046f5c9155cd916fb355f4911673737bad10b085725e1517edeb2ee3f63ba089e1b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}