{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf0f9cbf195a9893260c146e5f14350c8270ae95b911d8b20134a054e91c3e544",
    "signature": "0x8b1b998451f8685a4650daa6bf5417f2ae7646ea2356d1f746083536c0ded08e22abac397dd002154610b36d470e519306ac7db2f6eda034cdf75a314b6a017f1b",
    "signer": "0xbf42d4a9fb147e951fE19e1F0d369263e6a2333B",
    "userId": "553824111"
  }
}