{
"manageEntity": {
"action": "Save",
"entityId": "676496613",
"entityType": "Track",
"nonce": "0x0bc195d0159fb7306ce7c06cc6408f119c16d9efeca567d0eecfeab1a62e69f6",
"signature": "0xdb00411735ae9a76a5af7dba93621635af005f4040e26185068adfb5fc450d453eb05fc5dc2417b45ae95b65d524d06fb95ae8db07ddc4d53f00a65f6863bb9b1c",
"signer": "0x12705C8Fe8CE886CeFEFa0d4d46E906f2c35C954",
"userId": "477934274"
}
}