{
  "manageEntity": {
    "action": "Save",
    "entityId": "1929800522",
    "entityType": "Track",
    "nonce": "0x556732a2761af0ed58b0817c0587d7dcb84975c01e0a661896dac3397e4077fe",
    "signature": "0xe25b315fea6e2450a95d754cecc919509839ee8b26e27af188d2d3ab5a8d8f4f19bcadc004ab95f906519094ce84784aecf0048eb6f9ffd8a3de6af6a6382cc81b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}