{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881116",
    "entityType": "User",
    "nonce": "0x987b4f66aa427059a5c22bc6b74ebb98796f79e2dd6b63ceb3ee86af856da4d6",
    "signature": "0x9eb33f2d50bdf605aa2344476b78c633b6e0fc3c06c01d12d53b0a256576caa73e0aadd40f738f7bda845b70fa754a16e4e757a0fc8dcd95dc15620c44186eef1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}