{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060146232",
    "entityType": "Track",
    "nonce": "0xfbd9f03c4a60639ad4e408560ddccc67ce0b95d19e42723078c82b75f2a3f7a1",
    "signature": "0x68d9195f2896c181c002215f4cdb7e39ddb7e715ea927dd5da24431e174f09b62748de6af6203e181434d064baa234bbe00f55746abc28922af58e1dd9c2997c1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}