{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xb4ff4a4bf440d18d079b55806e85ffdd0cf4a240f28578ad849df1d9069f31e5",
    "signature": "0xf4a2a8ae716f9543a5f854443e7d722f83183fba565b0bfde6daa11ac03a14c62beadae02364269a40c197c94a69686a14ebd7382e1e82cb43856d6b3dda67021b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}