{
  "manageEntity": {
    "action": "Save",
    "entityId": "131106",
    "entityType": "Track",
    "nonce": "0x2c053d7cf0f45f905905de7478743bdc7b8b087c98376c32ebe531e598dc20b7",
    "signature": "0xd61bc2b572cf81be6ffebaa9a7b21276320baa50b5c87dce9285da6c1ae258670537f74e04c082a36a7486567f19102efc15154b8987d9ab1a73ca5e8184594c1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}