{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2cf1d4caa95d3b7513dec07633323d8a80ac9964eb4f2179ae533c9e391ba943",
    "signature": "0xcb725e0e8a590a1a255e6fa7f02b6c3dbcfb8db3ee263cd47d79e989073205d55928909af58e369e996d84fe308827b2c39785188b6c38876b41f8727fa485a61b",
    "signer": "0xD7Ab35ef9474De51d2Fe1C5724Ac24eA4Ce845C4",
    "userId": "511046444"
  }
}