{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "239519",
    "entityType": "User",
    "nonce": "0x81fcafe7afce44eabf1a8ed1eeafcc524b01e6a433ab8fcb27d2a9de0db0811d",
    "signature": "0x908ade8e8af40dac38932ea5b79aa87b9c7f43dc2f67ea4515bc7a03321f3d1a04763aafccd9b3a446bb6e8d9a603ea1b2bcfc6da5cf584b6e26f6a214899b861b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}