{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x957fc6c8448ba52b76dd7b2ca5d93783847af65af9482b0cfde86621a285ec3f",
    "signature": "0xfd5dc20e8530c88c61de0cb8795057f88782a5b63ab7650b85b32ed32baaecdd67dfaa921262bec448990ddf189721e3b225796eb690175a722127c9cbef3eed1c",
    "signer": "0x85F3dE6E533ca5A34C56A0eE6d30251a26c4B00f",
    "userId": "846467322"
  }
}