{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x5175d66aca521ad2903709d9fb70f720a47695b4ad1666852698cef473323d35",
    "signature": "0x1b6a904fce658a0f69f67595b41aec5d49062b0e58bf515a6afb2e0937e21d50222cafcc6b1d659428113370af1491e8fb322468824ad24af160af5a5eb903b91c",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}