{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x561aba232113dd6e718c1f15ad1f49a3c953769a61c55df8e5da686753d68dda",
    "signature": "0xb1f0612fe64bc84c3f6b01953ab062b182d0ffbba7b6a07d5ac4ba21d80b05952576acd25c6f8a832c9d75bec3482d9f7818dbc55002162e8453795ac620b8831b",
    "signer": "0x576845950801f6283f5E91d1e1aa3acCbe24C20B",
    "userId": "840009580"
  }
}