{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0xeba787d490f5c2d6109bd98794c070477f7cca44ff8a0e1afa3f606c308409ae",
    "signature": "0x09f2eddd2920203fa4eeb42583c728ffd961a31cae3844f944a15eb1875232bf2deeb562a538e411801b66aff42637069a2beb3bccc004223e34bcf3db5337f01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}