{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c6ab1086a467204de452c04a1924ec9ca2a6919c72255e9b4535314439a8224",
    "signature": "0xcc3ac1ca2f30dedcd90a31780f4785163e433287eb127bd06536878fca48e1a91fd5318cd26734ea62c914dfc2a47ba529640ec800b06407685490a37e3876241c",
    "signer": "0x77c7af1b3d2aC5c8D919AEC90f030b2770f9c7a6",
    "userId": "620178250"
  }
}