{
  "manageEntity": {
    "action": "Repost",
    "entityId": "721226615",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x3c85f816a162732d8660d0fbe60a9bd5dc773db1cea25558ecf8deb8a9b196d4",
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    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
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}