{
  "manageEntity": {
    "action": "Save",
    "entityId": "659625181",
    "entityType": "Track",
    "nonce": "0xb09b2ba1d9e3d0b0f2a9f7e4f87735e8212fff1e1c9570e7f472e28f8972f0af",
    "signature": "0x67662c11230397ddc5d0b139b34e8e08e108a8b5e2f472e5122f8d71890b11d9165aed6c15753715f7ba25454f9915f5a94cfbb3b72575f866dd879601e31bbc1b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}