{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "473427",
    "entityType": "User",
    "nonce": "0x3f03b6c7f9422814ba08aa2484eeab4fdf3f77ef4b6488202eec973eda48d075",
    "signature": "0x9840dcf5269b86dad5ca56e8838b8f179284fab93d9cf8139970cb1f1e151ddc4774fd0b502fad1fda43b87dd6c432648a654e3cfaec7b918ef257843e9bb1b11c",
    "signer": "0x63762Ba099c2247aD3755af8aCb1d62705f0D5CC",
    "userId": "851444561"
  }
}