{
  "manageEntity": {
    "action": "Repost",
    "entityId": "521920",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x5159ffc9c892db2972938f24b9dfdc25d55bff669454c5fcf3e3cbe73deee63a",
    "signature": "0xaf38871dff09b552e12fb23fc62cc255197443017bac667d8eed0709e8c83d8a3c66ad2466151368f63c0f4a8038d8e2143ac3066011b0d1939e088e324a53481c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}