{
  "manageEntity": {
    "action": "Save",
    "entityId": "1020237",
    "entityType": "Track",
    "nonce": "0xf4260829cee554cfc4706644fb4e69981372d391f2997066fe60acc8dfe9877a",
    "signature": "0xe7146e79d983ef3d8c97736e5ba4898607d71b2d0b86234b29c69c1f189ef4a7353b6f0140503b6ddbb29f80e4ad4e595c6ed03f400f35a70a7562b7010773691b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}