{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x697186a7f0e04786002161b4a73c7dc439a1e2273f15d7f2c14ee326f7503182",
    "signature": "0x946073e2c9d59c7931af14c2312d5d69b53d318276fd2d29d9df6a39e55d4fe5226d91f1f0d3016955621164124f531c609cd44d560a219c22d4c1c1254dd2ea1c",
    "signer": "0xd8a65dC2d71D6caDA0ef13A84908F90052c425DA",
    "userId": "837557269"
  }
}