{
  "manageEntity": {
    "action": "Save",
    "entityId": "103457492",
    "entityType": "Track",
    "nonce": "0xc87d043c91f60afbfe08c5975c627f189bcddb297b842afe663888dd3a7c7a0d",
    "signature": "0x0c2ff3293219ab911bd4ad2e12f641b7336bd235708fe838c210a2d96de047454b1a8be2aeed5d9a1047ff1109e511b0b4fefcbc7a7c4686fafc99bfc02103521b",
    "signer": "0x96F25BA81df0482778A947af84C03800CF5f5d64",
    "userId": "993166642"
  }
}