{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe07bf496c85968d555685d7bece4d17c047e7ed44b98c3d37a45cb4ffbdab256",
    "signature": "0xc54d1ffb566c034d8b2f6f593272bcc30ba55dd15411492a10368582a38b606b2bdc643fb16385e11cd52ef15b9c3f6e3a657d3a2a5e4b98afa46b937438cd3e1b",
    "signer": "0x55fd27AC924de4a42599B2Ba833f681F5454E926",
    "userId": "870535319"
  }
}