{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x83a05a618f64456741d598781d1fc3f3d5e697da417fbdd141c33bcb902edf89",
    "signature": "0x90c320582900abd2ac1f18d83cbd0ef8e2984e8dbf78b9e63a74b9ffa0adcfd775e1aa13e630c3f892ee1103dd41a75df35ea697cc715d43d74b685c2a89507c1c",
    "signer": "0x3E588CfA93A040d26F77885462D1b62B2ffc130e",
    "userId": "781563204"
  }
}