{
  "manageEntity": {
    "action": "Save",
    "entityId": "1933988853",
    "entityType": "Track",
    "nonce": "0x92baac572091e2d6d6b88045d43d480840747ce88c58e1b454f0abd28e4f8ea0",
    "signature": "0xa7d2dd63ead62cc39b074a056c2f7b86c50c795bb5603aa1e9247ec4d321bd05794821b576124d80fc4b2267847bb822cee55becdaaba17beebc4fac7a0f88591b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}