{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143381",
    "entityType": "User",
    "nonce": "0xc3311c57d3124587f6a83027f220e846c94b3bf59ea0685b34c5cb755ae7a91b",
    "signature": "0x9c2648c1ead4b236648c5fc58e17075a4bd072f0bc026d0ff7b7df50fc52a7fb7a1887a8f2af9f2a1cf6fa2aae4d56e228fa8bc2f669d71c5e4b31f7021328cc1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}