{
  "manageEntity": {
    "action": "Save",
    "entityId": "834196022",
    "entityType": "Track",
    "nonce": "0xfd8817cc8363e9ecbb24f6431a3eb8e8705a3a003abc6a029c519dedfdf2a740",
    "signature": "0x092525c0f469daf29aa8acc1b0176beca36ae63062e3351c04879f97d6987ff93228bf9c3ed66f0fa24948e37f36545fc8d5ea071f13f183989ab7dc570903cf1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}