{
  "manageEntity": {
    "action": "Save",
    "entityId": "1962804186",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb1c88acfca8288d0958e307477b486295099e2adef2fcdfac4226f743c6bb373",
    "signature": "0xd919d7d3f1f5c13c8121b3350b4e37b2e8d75fcfa1d6d3aaa7bcd20aca6c478c5fdcca0f36cd7bf4e63962ac42af58ac7ea5b3c968c01460bb1d783e0752e94d1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}