{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008030",
    "entityType": "Track",
    "nonce": "0xb332b8a853f08f4595e569b57e563b2f8c4ad693adcc97aa36bc09f724e4ae25",
    "signature": "0x6b55023a6ac9b486d25089f9fab168bfdc7a02c04d5c9a35f560746e26fd8a4d600c58631ff57915bb8cbe2ed410c194e2db696342cdef632eb0e35e8798e93a1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}