{
  "manageEntity": {
    "action": "Save",
    "entityId": "2023596283",
    "entityType": "Track",
    "nonce": "0xc3b548c370e853bd655c75c388b4f141d357f5e39085429c74bc9400ceab9e54",
    "signature": "0x04c10bae68545a548131cc9e8e1b1d4fd3525d8a0cce9196eba45086e57771705c578148b1095abdb5a9a2c50b192602f5ed608493f434445e5579d2c58229ad1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}