{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x521115f2132d957e604e710a78afbb46ff1eb3619f19e5c8ab8658dbd86ccf20",
    "signature": "0xd263f0e20a46640ad8224229b0bdba52d43bc626fa94bf7e5c9b8c9d6c3b8dd96810c658c16721fa055ba991e6b03150f8e8995ab3e335b72ee3b561c3761d251b",
    "signer": "0x434E6E903F887d1123e2415651292ED71aC170Eb",
    "userId": "643976014"
  }
}