{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9eac740e79a9dcd056c4f48a36dcf0cb369bd13baabdecf1e0e2cacaf618e34d",
    "signature": "0x334c3d6726563c1f2387d8238e877c087d0955f05cc029f5a01fd8c78f9251ad0b5004b4c3408a633e76a1d0925c6d3fc4ae6cfe81503286dd0df1a84fe6aa961c",
    "signer": "0x6121632dFa7B595b19fc03a4cba0ff13d97DF266",
    "userId": "489995686"
  }
}