{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xca9a164b01fd909b891e85af683bfc02a1e5ad3aac6240a1a5445b273af743ce",
    "signature": "0x56cf2e0619ae7f6cf3df0908d074755d54cf6f8d58b534fe2cfb93ceba7a23dc00c0692d0d3ddff4ab444e07b94c22851871783817ab16961bb91742686d0b0e1c",
    "signer": "0x0BABf898FFa62584d7601b167657B9452DD4fB05",
    "userId": "568753504"
  }
}