{
  "manageEntity": {
    "action": "Save",
    "entityId": "1479691486",
    "entityType": "Track",
    "nonce": "0x34b5fd58a36e9558b151a1ea4b4d3bb25591f3111caf0946f11fcf2ca90a84ea",
    "signature": "0xd32b53ab5f5d0fd7fe173556f19620dd333a18fb105057e0265d89d7634bc7305fcb21173af5f67efcab8818131708c0a7b8e8ec1fc8d91efe5e4313c05afbd21b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}