{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337206",
    "entityType": "User",
    "nonce": "0xb7aebec02d76b971a7e4854cb85e11a48db4070bc6630a7f86d2098dcca3bb30",
    "signature": "0x35a0c2675627f989eb3b56a31fe00b7a61e0d97613049c9e774bd95e56f0d1d06498c92177b63719b371cbb32674917197c7c86f1c3cc3db06b3fbbc832ea6531c",
    "signer": "0x9b1a9d02F213F5C768F11FC832194b5cB665E056",
    "userId": "418702748"
  }
}