{
  "manageEntity": {
    "action": "Save",
    "entityId": "1127609",
    "entityType": "Track",
    "nonce": "0xd355848e77b5f5ac0f665d6fbfda5c4df26ef0e7dad791825421fccc4b2e3159",
    "signature": "0x20da5eaa190baa932a6066f47eefb8ada95f7999d1ffc478883cf4652e8acb5a33a36f059475b0515a326f67c2e43e6b84391325df4b905dac03892247e48cba1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}