{
  "manageEntity": {
    "action": "Save",
    "entityId": "2078748213",
    "entityType": "Track",
    "nonce": "0x5e5101b359cd3e7fcdc132b176949ef5edd8e4332a215fcbcbe63af22d7c7d14",
    "signature": "0x49fd39f51560819398d8b18f9c4f87aa47597db48571b74596dbe9690eeb5b8246302dc055cff6884fc8253ae592d0251898a41197f78852d41d485caebc0cf91c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}