{
  "manageEntity": {
    "action": "Save",
    "entityId": "902262036",
    "entityType": "Track",
    "nonce": "0x9a682a74bb003fd708302836eb2a3eebeec8d80da80c9c14ece6c486548cd2d0",
    "signature": "0xe507d55c90ebb353728b250a4be228761571bc696e476a3c173858e19e1caa041afe8101cad204a1a1266a3c6e739875ae26a8c1e2d09ae0d3611638377fdbd11c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}