{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7108e989ce56d9fe0067d75d10fe77e48be78ad7282d2164978c4a99e6290370",
    "signature": "0x182b8936cbd44c657d066a8470c5497b9e70e9fcb5767d019e24aa38e460227752b03671694a553b0f64cec09e0ce3c3676f5c53b2fc56969056d6690d6624aa1b",
    "signer": "0xf3fea3B2be79E54d1BbCEb82df8F82420871A615",
    "userId": "382120100"
  }
}