{
  "manageEntity": {
    "action": "Save",
    "entityId": "19182878",
    "entityType": "Track",
    "nonce": "0x63f0167b9e96bbeb47ce3a835f90d605ed374221ad41715f285a30d61d86518b",
    "signature": "0xafd2effa93d46ebbd7fd6e0d1780dfb0162f785906615ccb9589eceb67e1b5225caf821e7bb69c0b973948ec3d280859ab5e3d22a17cb1d1f45a8ee26452556b1c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}