{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6bb91b66a8d5747da43a0f61c3bfcdd09eb3cd4348a8edff9857a699c2ebdab3",
    "signature": "0x4d6aae809337dbdaa68941765d6ca3541832098a15d39b84e0b43920440e5bda53a9faa69d3994334e464abed4c3f4234d23146b81d77a577d970e212eac3dce1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}