{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1019518511",
    "entityType": "Track",
    "nonce": "0x63dc89fc0dd620d0b25a5d9dfedf6c782cb3f1e1b945f73d90c2cac8e10530b7",
    "signature": "0xfd7e8988445381006d3671fbccb150274dde34267be8987ec3d302ee16f5be604f123d16a82dc2765bca96b14bb53458ced79fe37d6d055d9e9cce3c7478f9241b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}