{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x2ba3c4dd7c9e049233eec80f471f9cd9d9ea68b0ac7212092147ba64e155c27f",
    "signature": "0xa725e09f94145a68edddb1a2404e0cfafe480417471bd3bdd10cbfbe29ef513151a1bd04311a51f5d28f0b79c2cef6b1d2141551196268fc2e90b3bcd49ca0021c",
    "signer": "0x1c4Ee34565eE3A8304706138026D7518821F356F",
    "userId": "584804802"
  }
}