{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12349",
    "entityType": "User",
    "nonce": "0x6561a3b67f4473bf8e839307892d1cd9fe59228edaa487c2391e773f5b34da0b",
    "signature": "0x2b575c730d7e73c6a73a86237deed2557f41b784fa2e3142c183ca96ca252cf43c3999c8b56b74c4a65da3443e5e8e2f34f533bb1a2ffa690bcf83a1329571b41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}