{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "151",
    "entityType": "User",
    "nonce": "0x6794fb4796f6808b31b6c20fded359b453c0cbc64242c8dba08d62c550cf43e4",
    "signature": "0x3adabc56feb3dc9a3b9d3253a6a721bb467a8bb1adf51ab590666ba26f8ee785213e13263430292d5510fc94652e596376f736b3586f1d29ebfae13e3e1201f81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}