{
  "manageEntity": {
    "action": "Repost",
    "entityId": "1550876490",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0xe6a77b74154fcdf18806ea9e42c69f666fb9cd21e930bdd4c490577ddfe1708b",
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    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
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}