{
  "manageEntity": {
    "action": "Save",
    "entityId": "1017503208",
    "entityType": "Track",
    "nonce": "0xd1392ae199d23464395b6a0131859d37faaf18e8a7635f621ceca5de7a810cf3",
    "signature": "0x6d498a06ea03e058b082a9f13526246f38c619fcf3bc219c495e9cc1e175aebc3e436f740ebaaf6f58a9ea18e6286a8066990c6bcde81e4cfe0718d9e887d89a1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}