{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "657123861",
    "entityType": "Track",
    "nonce": "0xd181d2d679abcf66645189f4d73915d464bcac1609974d97bb6bfd117befb726",
    "signature": "0x9c4c1cd5d4ffedae4b57fa1cca007960f55a4cbcbdf74c06b47d3082f4139c6a204d769080fa3f9e510f19286fd51f04317ba3b58fba08b2d651e7ff49d2608f1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}