{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145451",
    "entityType": "User",
    "nonce": "0x5f0907ffce17f9d8a685126aa194d15f727ac3c8ce9bfbf543dd86c35621e569",
    "signature": "0xd18b8998d02f1e420cfef3b787de2c60a92e9b29170a29cf97a6c286d32ca091458a9282a1de34a0bd342d23af789c97c3f7a73df0d54283a1f88f62e42187dd1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}