{
"manageEntity": {
"action": "Save",
"entityId": "492596742",
"entityType": "Track",
"nonce": "0xadbf3ae226809f3bcf7a6611534c3bec79e1ba4d0d0de0b219e6427bccf375c6",
"signature": "0xaf34bb0a7300ccfb889e21523f4fe50b44835562412d2259c65d019c48c6cb58367df9c6c71d7e4c4354858eb37aabb9e5e017bd3aac2e736b0eff69511ecb531c",
"signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
"userId": "354908"
}
}