{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b5d7b5b8eeb19a877e0c5499752e1a06e45d44c7b6472d6eb48131f39977996",
    "signature": "0xa318c6c072475772b8d4581810ef8ec5484d43e64bf589d65b951779ee8672da1e72c707137d43021b291a6f8a77dd5cbd89ebe0c7a8467399cbcdc995034ad01b",
    "signer": "0xE37b4eE16028F19A2C15856FdB2cBfDeab7AF4f3",
    "userId": "113366790"
  }
}