{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55291",
    "entityType": "User",
    "nonce": "0x9e9bf1d934b73ce6ffa71018d17ba7fdca99974a8c2659cc7b88b4c1782c1843",
    "signature": "0x4a1cb05e96fcf762b107db4e5a581af4b95d04da82e4a2c78a6f8c29e4e750b929ffbec76cbe0dbd4fcf4248e865fb6d2cf91dca6dbbc60cb61bac29d44570801b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}