{
  "manageEntity": {
    "action": "Save",
    "entityId": "793576053",
    "entityType": "Track",
    "nonce": "0xf10625e0c416289128f3d7c083e9b7e1d694d0fd67c0721cd8a46b754dd1f3bb",
    "signature": "0xf36ae2b6aecb960771d1782e2e33987e3d0729e202f5984db06fef79ab392144166e533619d52ef2b78bdd632f2208c875b060d951e22fadae877ad99f9c59d51c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}