{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1223261598",
    "entityType": "Track",
    "nonce": "0xb29075da042600ac7e60d7fc5681bb925887afb4a5c3a1e048946a5f338a3e2e",
    "signature": "0x0586df87f408ab87f22b34cf7b4ef3013e8f812c2d45af1430b9204cce81905c6a0978e5ded5978571b0a72a92aca48de52870761bbdf81b892b7f0ea44c79f41b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}