{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0994e9f05896cc757bf27382dac6242f1d6dc8d358809bfe8e86ef34834cb03e",
    "signature": "0xaaee42a6e4c6fc2720581469dea86a50958f0777d3fe2b46f8cecf70315e2ab673f07a9915fd127ab787e2a5b7dc711f63013789db982d69355c04372d6505111c",
    "signer": "0xBB3cbF4BFE93A8852DeBD3A264E281621575684B",
    "userId": "578447734"
  }
}