{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389727",
    "entityType": "User",
    "nonce": "0x17d0e2ae318fb32cb924bb2c11f578a05bccabf6d32e2a9b7ea12a2668c3b0c7",
    "signature": "0x72ca870a1ccad083eb2e0f95d00780e2d4b520b16db75da70fadd3aac8bec97c6b2ecb50110296be2558a0708dc4f1332c134495f29a80bf91c62e2667bbcb991c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}