{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1638584898",
    "entityType": "Track",
    "nonce": "0xa656e981242051b3f5f982827a683dcad63a745e6e0fb9a8abef751e0938c386",
    "signature": "0x848c58cb917b52638b94b5695982ac03a77dcac38e0779ceab9f9e31458b8feb23c9d960576b08a6c81fe4e1bcfd9d87fef1ab56cae7e72438dd765d3f418c1e1c",
    "signer": "0xC3E7AE34CE9Ff0ab2d9df2BB2364DeC76F06d501",
    "userId": "859050902"
  }
}