{
"manageEntity": {
"action": "Save",
"entityId": "135487143",
"entityType": "Track",
"nonce": "0x98759b2920412c29799c2f708ecedecabcf9e0d3541b28ed22b1a84a5eb64a6e",
"signature": "0x05ee38e9685b50555413ad02626fe161f6ac64f05f0c0a8de289bc126c24de3e34275098f2c8de576e01e191103310c4d22bc96fafc950c60ec3d53b8abdfb911b",
"signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
"userId": "981716494"
}
}