{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5017",
    "entityType": "User",
    "nonce": "0xf50709bebc1e7fbbcbcdee8c9937eb0ee759a261468adec2aaa45894805d53c3",
    "signature": "0x1fe9c5100d20f34933df463b9e9bb2ac0f60e6c9bb44c626c531cbb9630f26be12ff6662bc4645bb2dd6be10ed5282b7e599ef3ad907ab6327aea09e551ccecb1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}