{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x04e039d8800a3fe52d46b243d7da6056a144610d58b59fcc6f6f433062a5a8a0",
    "signature": "0xb371b4d74a7ac1ce3a6ff9b246fc8c866dccfdcf9cbee76e7636219e599d4ca054c0ef8818a944b1730423e8b02ce172d6627dfd3e8b64c1c64ea1cb848d81e91c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}