{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280440301",
    "entityType": "User",
    "nonce": "0xa8ca04d4f990a204cbd1927bbcfe6591e5f4c4c1514366b4a7d30d41d97f91e9",
    "signature": "0x694f40ac7c91c436d46115db0751b52f3e35eff4e45de87d666e677c26f846ca34102384f2097c0600087682fbf0bfb869b9658d437022b6f5881ff69da64fe11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}