{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12",
    "entityType": "User",
    "nonce": "0x2e8494e922113d70e51899523cbf027b00cea9b529e8e203170aa16593bae32b",
    "signature": "0x25e54bdd76fde092d25c8750570484d1fcc128fa8479071d6386276f32ae00991d766fa37a2c3283d4348ee4d2dd3c1058c39bf491a47e3e67973c1ad1e164171b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}