{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcae0657f500d68ab7f0fa5972687946266fad5cdc9d69a2587fb516fc469faff",
    "signature": "0x48baf86524a411b632176a62ca0f613137a49663aadd0ec8e973f251c7c535a4371dab5187c0b82d194502dc2df327c7f46c628a4bf53aa1f8cf627440abd8221b",
    "signer": "0x57f999a08DA6CFdA393DD6851EB6899a3CC9AB8E",
    "userId": "262486005"
  }
}