{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197294",
    "entityType": "User",
    "nonce": "0x58e0ce703e78ed0a3726ed1d61a85511f6b928ad24ab1b63e783336eb8b3b514",
    "signature": "0xf2a55838a3507e40fe466af3789956224901517710b39a484c218e04351231f501a2ac186fe64d200c4c76684f69c1475b6736594c09b0a3370e11e0c002b3701c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}