{
  "manageEntity": {
    "action": "Save",
    "entityId": "1594103165",
    "entityType": "Track",
    "nonce": "0xb61226b4fc401ad81a272638dd2be109157a0d24019d47d431b19ec575718b94",
    "signature": "0xab5df983b6ba04fe59d304f8faedb4541ffdc4cfdac676be4899d3cb7760abbd0e3e6b023c1c1195c541429db58fc5f58afc71b2bd3aee602063b413e2ce805d1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}