{
  "manageEntity": {
    "action": "Save",
    "entityId": "1027546795",
    "entityType": "Track",
    "nonce": "0x026a41eb2166f117e5f41a3107643c654de167ed38db1bfe08b3a76404303c55",
    "signature": "0x54e6b277663156ec22befdf6330f3d83c13482e21b2e8a992c938868a65b98a2135ee6868bb1c2f782346c255b5f76439f144dd536fa60a9c627b0d792b87ed71c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}