{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa7b51cce14f8e2f87aac62dfdd724851d3941027ec3ed50831f96625e1ca2ceb",
    "signature": "0x5bff8fbed4ebabcf8b14a260c934fb506f8f1932233b5b80e597a26141d9cd6a1aa93dc2c9ed5a1418ce1827c7ad854d297eafebbd3f6a2bc0e2d2468935d1b11b",
    "signer": "0x5CE5e6C1C12f0503970e8f48F1BAB9C3b01C1443",
    "userId": "111362690"
  }
}