{
  "manageEntity": {
    "action": "Save",
    "entityId": "293511279",
    "entityType": "Track",
    "nonce": "0x4107f9a56bfad0359dc575dc9854e126de21c3d19fcf4517640a5a7f23d2df84",
    "signature": "0x4408a5e2b7d354a1f302ddd8fedb5a7b12f0f046c3351e9e25bb686f239979cb2ba1ec4a7487d0b3d162813575a0a88baf54274faad883298039ba87cb09184c1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}