{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "631914512",
    "entityType": "User",
    "nonce": "0x660f4d0c9062ba39ce738acd760754ea78ceadf3c51be40b5e200e017f1db8aa",
    "signature": "0xd9b1c9f5c63528804f83c323d4afbc5d00bb9033c01be26bd66ef74c9612ec8117ad7817c345a162420c98c3546257e94033081d54316130d0b62890e4717fae1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}