{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x22551446d96cd23b871539de19f874916a228b70bda79b9e42b27bac5b9a2868",
    "signature": "0x518e886b6ae03aa1726d76a378f0871a9b05a3c8a71c1d9ada8a5729262082a1449c874ededb9507b2d2f7f4b9795ad040685f1388d3e663fa11b6651788d7451c",
    "signer": "0x8838cB510ADd37b71093e4FD76B81bdd280860f8",
    "userId": "674339889"
  }
}