{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28753",
    "entityType": "User",
    "nonce": "0xcca547e727532123ca3f13aaf97f6074204d4fa20f99ed74edd7657718213891",
    "signature": "0xd65a85b548fc87576c90145a91c82ccb8618338a54f4c41c3d8268eacba44f075b698bb9cbd3bf06a254b6d0d928f412f04e9825992668e75ee07497de811a0b1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}