{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b6ab0126ebe5988e037bafbda86e1033a835e23bb35770fe4063c0e5121596d",
    "signature": "0xe5db1d95f6a2a46c993114530d6bc156ecb340ced3df7162bd1ea08fbbb5214646f8825a1b2acc2adb1f52bec87c899b2a405f93ea4781fcff6169ea0591325c1c",
    "signer": "0x5a12E68dE8459f7c1893E6695B486B228De997cf",
    "userId": "763293888"
  }
}