{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0d9ee4b08c7801725df857193e90c52ce9f6c79f458a464f4ae0880fe29bd99",
    "signature": "0x30a1c8379447882cd12d4a7f7b757aade9fe1da9250c602c039e1104185b1db4608e5a5f6c0d20ec5c8bece9a793f61cdb63ba82dbe0765830b5ca574f971d7e1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}