{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215993",
    "entityType": "User",
    "nonce": "0xf60a607e73002f50ac408d48017786810a8a10fdb0c542fd732689a2be390444",
    "signature": "0xf3c2d863bb900148cbd352d6e0d6428b527f8ddfcc7231f461868f37e4cad8f2764a1a7945a498fdcceec28f2060b542167a0c826087cbc25171e5d4a87729db1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}