{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "873141",
    "entityType": "User",
    "nonce": "0x1253e21059eb83cb0c81173db30e73a1d4980fb0e02c1748df3e3fec34c48165",
    "signature": "0xe8a35ed29dc3b1f2899f30714b8ba29cd8f686b25f07ecab75a6ed754a6115191d7a98b036b6283d94e32b5dd9688a724058c68aaefb5c1430133dfa2c9af0901b",
    "signer": "0x49368dB15B9A78dF090195AD4338818bfA70C88A",
    "userId": "381576190"
  }
}