{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333763354",
    "entityType": "User",
    "nonce": "0x56b0822e7db7ba91c042de9a094629c8e9e5b6d4b002421b4a2897ae7a6396d9",
    "signature": "0xbb4a1a3907fab0343edbc921b05974e1ad6f72692a7869d5d2113a4f4bae48341b79932c1731ebce2456cc2e246230c85948c4c67a226eb7bb3dbfe3f08652461c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}