{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x89dd6392a0fe41583ecb8acd1e6bc460fa5fecc23f146f8bdd2f18496f1be6da",
    "signature": "0xb75801cd480034a735502bf3032f0233e56cebeecefb02277f71f9ef1a7bad2d1dbc90f1b23dfc83e6f62b84702218982b1e407d0671d55fd02a4b0a48ad6af71b",
    "signer": "0x9f48fd49eFECDB7396d1319B50C861e0616699c7",
    "userId": "586523884"
  }
}