{
  "manageEntity": {
    "action": "Save",
    "entityId": "1158771520",
    "entityType": "Track",
    "nonce": "0xe85c537fd64bc7b04e2f6c405f202730ebbb6f6582387532edf79e614ab82aad",
    "signature": "0x9ac9676ac4f9ab56d81c2ca6db33c1879c1d1c6c90ccdecb19fbbf3f36efe8cc74cf95e6b772badeff598b1f03c5864fa9ab08b2d535ab077331d91c31622c461b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}