{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "590052416",
    "entityType": "User",
    "nonce": "0x5c59efb6f211d5b73a7a34ec8f03bca5d660a9bc1108ddbbfee4244e39dc2863",
    "signature": "0x6d80ad9bd70dd39d3aa42b9f8431bc161b53c7cd628988a99da2d4ae353146790d303efd9735de6ae9117bf5abe96caba4d2d1926108b8b948a5d8f5eb5c8bb41b",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}