{
  "manageEntity": {
    "action": "Save",
    "entityId": "1183364415",
    "entityType": "Track",
    "nonce": "0x1fc889a07089b2bfca1b3682e0f30ae0652b8504ff119f0dbd8d928938cb5356",
    "signature": "0x13e763d82dbfc04206d6d301001906d8e23d02b034f671d8142c2889383367b731fcca8405ae2dabf9687d64649b3639256d0d238d2b1949b244d5f0f8ce5ec51b",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}