{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854614078",
    "entityType": "User",
    "nonce": "0xbf45311a911d7f0f3ef61489f11713a91adea52dd66db6aa6ee13e39c28b8f4c",
    "signature": "0x59f3721da4205e3a0d129bfda8c6d28a8ddfe7e2006a313b1d379291724b041b0bdf6f4d9451214e702593f8404863beb4790191fed46f8ddad3150a4cc29fe31b",
    "signer": "0xb7cfC3e8ADEA33d90F4f4B34f672a1C391955768",
    "userId": "120328"
  }
}