{
  "manageEntity": {
    "action": "Save",
    "entityId": "1173222518",
    "entityType": "Track",
    "nonce": "0x4b9334caa0edbb279379c9bd9c4da219aa5d4178becc3f794e82abcd07c5e51f",
    "signature": "0x3822c12b0f18cf892ebb1f48c1e1ef50ea25edbfcd39e805503383454fbcbd60775475aea38a67a067fa5e4fac04a640df78022ed8bb3e35ea71fe431e37b95e1c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}