{
  "manageEntity": {
    "action": "Save",
    "entityId": "1791278497",
    "entityType": "Track",
    "nonce": "0x78b40a5a444bb60ba1debccf3bd317246319a30c8f334bdd2bb8df3349da4ff3",
    "signature": "0x0699f683b8c2e8ec99293b22c0b71799d76eea6be11e52db791e8030915a7d270156ea57ef82bfc63d81e61ac0f9b8754ab3d2e1a183330d172b35f3d4d43a591c",
    "signer": "0xfeBBAF2B7d9F5bE3DAA34bEe70259f61ac4aB836",
    "userId": "139146722"
  }
}