{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "910407724",
    "entityType": "Track",
    "nonce": "0x63a7c06de7bc2f259c5f881513c1f9cc1ea07f09feafc08801bf76519bb095e4",
    "signature": "0x64bf92266cef1d9b4ee46df90c82c1ed934f9ac66ead04c763d06565544a0a874dd1eac7b4db3622248bb8b7678ecafec1fb229068083356f2d5b9567aca93421c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}