{
  "manageEntity": {
    "action": "Save",
    "entityId": "1455995951",
    "entityType": "Track",
    "nonce": "0xc600181ddeb99d365a38158a9bd37b720fea832b61ff75ce2a5fd585b300a879",
    "signature": "0x5c35bae003971d294c19da18c8e5a666e4592f379ab8e3b34d01d04c2f8e0f0c56ff90167816a0006d19e77679b083730b1b453fcfe68ea881d92da8f45db89e1c",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}