{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140",
    "entityType": "User",
    "nonce": "0x445a013bdfb7c39ce077290885a70966ab843bcd1da9f2e22cd5fae04e9a4298",
    "signature": "0xaa01896713f520b0e3f2507c2c608c7df38e701dc9349f71cea9cf6acdaacda657e891d33d970c6e460f216339640d8e6afcec29cc75e5793360faea622b7c3e1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}