{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "918002405",
    "entityType": "Track",
    "nonce": "0xa206dd609c2d6acc8774918f2c14e135f737eb036b97a0a1ea67a52f7622af35",
    "signature": "0x6749d81be3ab9c38097d6954b50e23fa8013d8a202241b695ad175eb75dc9b420c7e2dfeaddff7871e7b423baab67f5f5621c9e45eea742a0635f14592ff949b1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}