{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "724666",
    "entityType": "User",
    "nonce": "0x13dba191426494f928bd880524e67a1dc7b29b179b92fc75491e19313eee0d13",
    "signature": "0x0c8b5c14e0e1aeb4984e057693675fc9c0d5b1cb037924c6f1674ac5fbcd9562346b9bf3127b0a15ca7ca16b40c5c11f337c08010c1ce02a8c1908a04d5d73621c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}