{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1d56ae7ba3e3b5663414145c77b32c61494133a55dad2cdca1392e220cf0fb01",
    "signature": "0xbe91f4cea8bd63141d8de37a9aa168bd04b5cd1cca75eeb5ff51bbe22e721f666b29459edd5a42453216821e8821b4e3d96a06c31e2393c2045e2b2eea07dc4e1c",
    "signer": "0x34a55C466710c320347C9bb5Af1d24DC9D4C240f",
    "userId": "321784073"
  }
}