{
  "manageEntity": {
    "action": "Save",
    "entityId": "127854996",
    "entityType": "Track",
    "nonce": "0x2d255ad7c47be7806884283e1862f796c1abc2f48ecedf4420bd3a911c9a9bf8",
    "signature": "0x9763ea92718c2a5ba51e64d81ce96a0294c72254a39fed1c144dc96bcdf76f9540849fa837d5ee40cf44c853479a6423ce8f3e11bb0709e93cded93af4c4f7ac1b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}