{
  "manageEntity": {
    "action": "Save",
    "entityId": "1578980763",
    "entityType": "Track",
    "nonce": "0xa56213b66a45ffc92f30712cd14ac46b8e8522733226cd53e1317c0424428f80",
    "signature": "0x87f15888b0b255c7d371a36868f0155ecc348b8c9a1b9fe4521e3d57ce0e524c0da435eef0367c66ccf94021c72c27ea0f6381ef5ed2a5c2064cbcefdd282dc81c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}