{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12730129",
    "entityType": "User",
    "nonce": "0x50a89a40f96ab8d2562ab893d5d8d63a6492cc02ca01a7494c1f52575b22d394",
    "signature": "0x12d94995dc0e62e9fb7009d23a1d352bb583717f9b9ced45964be1e125ccd3d02716a099ff89eaa313ab7e2385d0842bd54a27cfb65f23fadeb9a8f4b47a758d1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}