{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xd5b61e3292beaae5091b5c6fc3f49dd2722368583b6de925c70d22029095cd05",
    "signature": "0xc624212cbd93693ce367b3a81130ab81b3b1d38afe4c777b05e4bb9077a26e6b086d6466ac25386780e73ac5939dcdd9f9345ff03d6b4b00b75a01798c15d2a81c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}