{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1c5f94211e3203db00d05ded00fe58f5b92eba48af3409ab869920ef901f5659",
    "signature": "0x90afc2fe099043a759ec970aef4dcbebc1ba23bdb921a9bbc05fc38f300411ca2483b39cbd0e789513120a2598d3f857c8a936c2b9b68bda62e4c40a0625eb721c",
    "signer": "0x4c91D7ff58E18f3e4C4e7bF6c5cF428a57d087E4",
    "userId": "633873586"
  }
}