{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x16e5e467e415d7a1158644533505bf9fb2776101197d87122220d0230f1a754e",
    "signature": "0x93ea10f9fd71720e2337b37cdb4083579cbf0270f67e8229ed47bde664d3c96e5481e34ab46a3e8de55fb82c0060bc68570cc55f9c8367b17c8c80a6a9cdb3ed1b",
    "signer": "0x722c1135B8C86568e7E41305ebD51A35D89642D7",
    "userId": "985448570"
  }
}