{
  "manageEntity": {
    "action": "Save",
    "entityId": "1114601",
    "entityType": "Track",
    "nonce": "0x27f5dadf51c0529d90f9b8ce7b09b32c92e7f63b62c37ba0dd4b96d863214688",
    "signature": "0x8b6529de921327e312696e21e0bc8da1f9760efa542839d28d3a774471cc0fc333d9f57d5fecc1aeefa5f241ca4c831de260dcb4809726adcdde9c44c38354991c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}