{
  "manageEntity": {
    "action": "Save",
    "entityId": "624377100",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4ea219db5c964b6ab2cc95f1189236c78c8939012aa5a0f2153540dd3164ffd3",
    "signature": "0x2f5cfd3f576d3a249ae5b593ac731efc8b4794c52d9535c409938f23b25ac5b93f0eff75e4b68f01b26fcad8d3243fda77a59cf8226b0f00c8879a63064a1cdd1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}