{
  "manageEntity": {
    "action": "Save",
    "entityId": "1914333734",
    "entityType": "Track",
    "nonce": "0x182ebf0cca0ec7db44ab29395e5632745ce870ec1593579b273e8fc32ff8b3a5",
    "signature": "0xa99f8825a0f2ab0d0b714d5aa150b49c35f523be880a6d97f15d4aa95f35cf444de231c19904ca1ba8619a2e43e83ae263b4eb1df0487069c724663b36b514101b",
    "signer": "0x6673fDca0C0Ccf6295F7256018c42dc92F62Aa66",
    "userId": "708882563"
  }
}