{
  "manageEntity": {
    "action": "Save",
    "entityId": "536634924",
    "entityType": "Track",
    "nonce": "0xa4ad20d7cbc73fce845c6d6a33b8ef9ffca78d174af2b67d61d3df13e80ecab7",
    "signature": "0x767c1f8c870c128e11f15c1aa8c702b0a606a466d63d28bb544ad790c66b2dee7ee9f91c6d6e5421296300f5830a2c95c1d2fb113b753c5304c471cd7dad453e1c",
    "signer": "0x9668338741f0B2F3bcc87715a755f7FFACcEd1D6",
    "userId": "945181225"
  }
}