{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54247",
    "entityType": "User",
    "nonce": "0x2d4b4809c4d4ee6a830f8a12c26f60cc25127bd7b7483e1d0deb7b5a2435a944",
    "signature": "0x9aabacd656fc72090a5d93e9ce678cf7e972051f26eacf48cd2562ca9234ff7b759a2c2043a1119b47ed6bba7988abea63c575900186ba85da372ab30d88b12e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}