{
  "manageEntity": {
    "action": "Repost",
    "entityId": "21138823",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0xcfb12cad3f328255c1559910eac8f1a48f2c3d6ef81b4c4fd21e450113824cfd",
    "signature": "0xe2574221303c0cf50f7d588fb2b0451e12a33d6942ba8db9eba8b01dbaf89dca20ff35291fd1660860fb2da04aa173de3ebff4374fac7268012c9e19e37c59b51c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}