{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x00991ff319f068f881f3be3c8118c3c1a410b92590f677d2c0120802b843bc1c",
    "signature": "0x4a388ffbb52f189de9fd052ebac472e739d1444adaff5027c01fd10ace313e53607cf9accda8b23fbc808d5198c5f142ee379ec27fce294a0ed968989c42666e1c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}