{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116777",
    "entityType": "Track",
    "nonce": "0x1cafa64b9ebdc1361821b14fe2f649f40fc912654a57939035e60219543d2dd6",
    "signature": "0xc04b9fd63ac8415d9f2038ae8b645194877f3de6de6150b840e5280481df2f58447916055bb787973c801d7cc9ad28723c69e0cc2d7e0c8e15d662dce7812b9d1b",
    "signer": "0x8a278E79c8E7e655B94c3e6798972A44Daa2c6ad",
    "userId": "24098924"
  }
}