{
  "manageEntity": {
    "action": "Save",
    "entityId": "927876593",
    "entityType": "Track",
    "nonce": "0x1dd9d0e2b37ce46f99a01aa9fa7e7258e76de23c00f72c1a77a91bf88e5345ed",
    "signature": "0xbc0d83a8ea51c5789beeb6798b5aef302dbf386b336b832b9ae4537d39bd88e00fa619dfec3ded6bf2019b5038e56da068a72af5d5e616225509656492606fbd1c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}