{
  "manageEntity": {
    "action": "Save",
    "entityId": "800063777",
    "entityType": "Track",
    "nonce": "0x567bc782f6096e3e16de93c382790df9cf5b670a1bab32dcc8ec02125f57c11b",
    "signature": "0x10a3a085111291fb01c7561e35563fdc7f84ba323faab4f0f8edb5ac9f264b7f7b4cadb8d4f1535d6ec377c627a102c9312304bbe4487ecc38a1fecb1c2769801c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}