{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "713516342",
    "entityType": "User",
    "nonce": "0x3d38426a4903f8984a4b2a8a42a7a737ba2c67c4461b29db9c16a4b5433758c0",
    "signature": "0xd9a181444548a0f5bc7d2cf04f9aa2aab97394cfc6d4c229cb8f8b1610b4e1941e872c5fe5c54f854edc02ea8c9a44f495cd14964373bc1a1db1290612d42f501c",
    "signer": "0x6479d9720713f53dc89A54A1b2812731e2cF028d",
    "userId": "159329749"
  }
}