{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64a9d9f3921596da5201f47b4de814a95b81e3d19b458490c40fda2ff541c838",
    "signature": "0x17f7f59d06f5211ba571e972a4578a07485e2a861c9911eca36585de7fd7013f140e7e57dd70185780b3323381649ff11b8f5e1de725fe59d8d121000373877a1b",
    "signer": "0xFB4709d030b720ba13236C4B8baB93c3db897775",
    "userId": "954109466"
  }
}