{
  "manageEntity": {
    "action": "Save",
    "entityId": "1069579571",
    "entityType": "Track",
    "nonce": "0x3ec6aa081daf38e2e26bf61290f6187b3f85bd599f9b5e69f6264c44a7fd8fac",
    "signature": "0x7aad63d78808e849c62b0343c2c4a272dce9c6713efc8c4bbaf2506da63580fe07d4b0baf8183d194cd1ea8d25c96d2fb47f86d38bfb9e0bf0f6731f816b37c81c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}