{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd3bd744370e3be3751f3c735d6b42a3630e8bf351f355930be52fb24fc77b31a",
    "signature": "0xc6b7f6414ff7bd871b2727eb48474dda16288e24e2572a6992fd2ab3bc44f8c0607cab548831ca1e84f3f6ad80313960ac02c4ab3700f786a58b34fa18581f091b",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}