{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xa230d568266e7e005045ee0ab21bf5d9536d8c5d36c438c6bcb827fee0f5254e",
    "signature": "0xf4253e3904babea38137cf598b5ed9e2e9e5de55b20e07bba8b82a9a9beb7dc80ac9e5848c7880856df9c235e70ad6e4777295f7659d8a7963359ee568813efe1c",
    "signer": "0x9c0E158fd6a79ba8384938c72F34b5D765d2A9Df",
    "userId": "178678516"
  }
}