{
  "manageEntity": {
    "action": "Save",
    "entityId": "1006160",
    "entityType": "Track",
    "nonce": "0xafaa4514c17cbee0131457b4d685fd7906ef084f6cce7f2ba4df24532baf8969",
    "signature": "0x8dfb546b66a9b0c41053fd701583d0f0b03c4b5dd1b5ef664b2d7d9ac1291cef65a76bae4e1a3f29b84db69e0d6cb87742f660a62b35aa5f861cf848ab59b5621c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}