{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd55ec534ab8e032d760f7ad559dd656cb063a99210b413a9a251d913ac73ad87",
    "signature": "0xdeb006d45738fcd48f39478f0c8f9a8682a99656335647fb92119d2cd81421e56602f2f496845e778ed0467cf4d05569702031b26529c56b8f870ae1d2c78ce51c",
    "signer": "0xC68fb754d972e1351465F9B24e6e933AC7c10535",
    "userId": "210761228"
  }
}