{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1586420480",
    "entityType": "Track",
    "nonce": "0x8a4c28a0df31a010133536544529148e3ed6f4fae65b8063846decf03a2fd355",
    "signature": "0xc5ebb45f36359c1e89dbbf1e0044857f8271b786a0574d6f2cc4d289ed3552df24beb2a01fb007b2467b9e845131e29ddefcea82be1de90b6577509bce313ee81b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}