{
  "manageEntity": {
    "action": "Save",
    "entityId": "156693",
    "entityType": "Track",
    "nonce": "0x05bdb1c74663e149fb3e2237b022d8d8af46d25fc03d45a802cc240b3da9bdea",
    "signature": "0x06b2a07edb7012c6707cb48a97b5711d979efdf2f10e80cfe052943a555007e9481a7fba422e21567143d928af01018b916530e9531a0eb90b54c90d68cf2ffc1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}