{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2d7a8c5ba0ecf1c67444da18a26dd727b86ade67b68b106968f404cc5fdc88ab",
    "signature": "0x1682df300298608ae5c3aa4e9fd286d3e01255cc3b705f03e524f3f73bee76f91fd6cacfeb3764e4b16db0b87cef4e3db93839204ed6185800b5f0aa391bd5ce1b",
    "signer": "0xC9b9f4Dac097137f37142eBF706e28d33C9e03Ac",
    "userId": "440148906"
  }
}