{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "2147197946",
    "entityType": "Track",
    "nonce": "0x747cd624918fa690bb348888caaa995b9c07ffbed96e98f32ee46f7144fae851",
    "signature": "0xaa2c34b3532c0a3f8a34b2e3d139a9e07bf4f4dcd73a2f8eeb67cebb32b9e4cc34922e51349bbb3f4dd40b5ab07613134dde32cb8801e5105abdf046cea5b9721c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}