{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2619",
    "entityType": "User",
    "nonce": "0x156543ab01c53952090a842901f47f6512467288f7b28fb605c6b246a6da82f0",
    "signature": "0xcbac68b9ef6002b42f77c627e4b0a1b63a380c53a186b4a80b90c4b40546cb7f3eb1c26236443634e596a664a0fa04ce60020adf2c979b3976ad66a4c0f02ab01b",
    "signer": "0x6965Aa9ec89F0ab44c5241159D2188d7b83c1D25",
    "userId": "278763919"
  }
}