{
  "manageEntity": {
    "action": "Save",
    "entityId": "1080724624",
    "entityType": "Track",
    "nonce": "0xa88d5e094fe565f6d5c061ea93cc0bbd432681915a70e77c373a98d6ab666892",
    "signature": "0x1993ef35cc1047c39fb0e1cf1c9df306ce5be0dc9ae0543928c869219ce52f8f029f859990d25d1be6b7ae249f0436e4eb4f8546baf2a0835666f78de8a84de41b",
    "signer": "0x018849A3d6594093B7646022836BaaDF36aA36Ad",
    "userId": "702391481"
  }
}